| Term | Definition |
| macro | computer instruction standing for a series of steps |
| macrocosm | great world; universe |
| macron | horizontal mark indicating that the vowel over which it is placed is long |
| macroscopic | large enough to be visible to the naked eye |
| microbe | microscopic life form; microorganism; germ |
| microbicide | agent that destroys microbes |
| microdont | having small teeth |
| microfilm | film of very small size |
| microgram | millionth of a gram |
| micrometer | millionth of a meter; instrument for measuring small lengths |
| microorganism | microscopic animal or plant |
| microsecond | millionth of a second |
| microsurgery | surgery with the aid of microscopes and minute instruments or laser beams |
| microvolt | millionth of a volt |
| microwatt | millionth of a watt |
| microwave | very short electromagnetic wave; microwave oven |
| amoral | not moral; without a sense of moral responsibility |
| amorphous | without definite form; shapeless; unorganized |
| anarchy | total absence of rule or government; confusion; disorder |
| anemia | lack of normal number of red blood cells |
| anesthesia | loss of feeling or sensation resulting from ether, chloroform, novocaine, etcl. |
| anesthetic | drug that produces anesthesia |
| anhydrous | without water |
| anomaly | deviation from the common rule |
| anomalous | not normal; abnormal |
| anonymous | nameless; of unknown or unnamed origin |
| anoxia | deprivation of oxygen |
| apnea | temporary cessation of breathing |
| aseptic | free from disease-causing microorganisms |
| asymptomatic | showing no symptoms of disease |
| atheism | godlesness; denial of the existence of a Supreme Being |
| atrophy | lack of growth; as from disuse, disease, or malnourishment |
| atypical | not like the typical |
| monarchy | rule of a single person |
| monochromatic | of one color |
| monocle | eyeglass for one eye |
| monogamy | marriage with one mate at a time |
| monogram | two or more letters interwoven to represent a name |
| monograph | written account of a single thing or a class of things |
| monolith | single stone of large size; obelisk |
| monologue | long speech by one person |
| monolithic | massive and rigidly uniform |
| monomania | excessive concentration on on idea or subject |
| monomorphic | having a single form |
| monosyllabic | having one syllable |
| monotheism | belief that there is one God |
| monotonous | continuing in an unchanging tone; wearying |
| polyarchy | rule by many; government having three or more rulers |
| polychromatic | having a variety of colors; multicolored; variegated |
| polygamy | marriage to several people at the same time |
| polygot | speaking several languages |
| polyglot | person who speaks several languages |
| polygon | closed plane figure having, literally, many angles and therefore many sides |
| polymorphic | having various forms |
| polytechnic | dealing with many applied sciences and technical arts |
| polyphonic | having many sounds or voices |
| polytheism | belief in many gods |
| anthropology | science dealing with the origins, races, customs and beliefs of humankind |
| bacteriology | science dealing with the study of bacteria |
| biology | science dealing with the study of living organisms |
| cardiology | science dealing with the action and diseases of the heart |
| criminology | scientific study of crimes and criminals |
| dermatology | science dealing with the skin and its diseases |
| ecology | science dealing with the relation of living things to their environment and to each other |
| ethnology | branch of anthropology dealing with human races their origin, distribution, culture |
| genealogy | account of the descent of a person or family from an ancestor |
| geology | science dealing with earths history as recorded in rocks |
| meteorology | science dealing with the atmosphere and weather |
| morphology | scientific study of the forms and structures of plants and animals; form and structure of an organism or any of its parts |
| mythology | account or study of myths |
| necrology | list of persons who have died recently; obituary |
| paleontology | science dealing with life in the remote past as recorded in fossils |
| pathology | science dealing with the nature of causes and disease; something abnormal |
| petrology | scientific study of rocks |
| physiology | science dealing with the functions of living things or their organs |
| psychology | science of the mind |
| sociology | study of the evolution, development, and functioning of human society |
| technology | use of science to achieve a practical purpose; applied science; engineering |
| theology | study of religion and religious ideas |
| abiogenesis | spontaneous generation |
| amphibious | able to live both on land and in water; attacking with coordinated land, sea, and air forces |
| antibiotic | germ-killing substance produced by or derived from microorganisms |
| autobiography | story of a person's life written by that person |
| biocidal | destructive to life or living things |
| biochemistry | chemistry dealing with chemical compounds and processes in living plants and animals |
| biogenesis | development of life form from preexisting life |
| biography | story of a person's life written by another person |
| biology | study of living things |
| biometry | statistical analysis of biological data |
| biopsy | diagnostic examination of a piece of tissue from the living body |
| biota | plants and animals living in a region |
| microbe | microscopic life form; microorganism; germ |
| symbiosis | living together in mutually helpful association of two dissimilar organisms |
| anatomy | dissection of plants, animals, or other things to study their structure; structure |
| appendectomy | surgical removal of the appendix |
| atom | smallest particle of an element |
| atomizer | device for converting liquid to a fine spray |
| dichotomy | cutting or division into two; division |
| gastrectomy | surgical removal of part or all of the stomach |
| lobotomy | brain surgery for treatment of certain medical disorders |
| mastectomy | surgical removal of a breast |
| phlebotomy | opening of a vein to dimisish the blood supply |
| tome | one volume, or "cut", of a work of several volumes; scholarly book |
| tonsillectomy | surgical removal of the tonsils |
| tracheotomy | surgical operation of cutting into the trachea |
| antipodes | parts of the globe diametrically opposite each other |
| arthropod | invertebrate with jointed legs |
| chriopodist | one who treats ailments of the human foot |
| dipody | verse consisting of two feet; a diameter |
| podiatrist | chiropodist |
| podium | dais, raised platform; low wall serving as a foundation |
| pseudopod | temporary extension of the protoplasm, as in the ameba, to enable the organism to move and take in food |
| tripod | utensil, stool, or caldron having three legs |
| unipod | one-legged support |
| homochromatic | having the same color; monochromatic; unicolor |
| heterochromatic | having different colors |
| homogeneous | of the same kind; similar; uniform |
| heterogeneous | differing in kind; dissimilar; varied |
| homology | similarity in structure |
| heterology | dissimilarity in structure |
| homomorphic | exhibiting similarity in form |
| heteromorphic | exhibiting diversity of form |
| homonym | word that sounds like another but differs in meaning and spelling |
| heteronym | word spelled like the other, but differing in sound and meaning |
| homocentric | having the same center, concentric |
| homophonic | having the same sound or voice |
| heteroclite (adj) | deviating from the common rule |
| heteroclite (n) | person deviating from the common rule |
| heterodox | opposed to accepted beliefs or established doctrines |
| hyperacidity | excessive acidity |
| hypoacidity | weak acidity |
| hyperglycemia | excess of sugar in the blood |
| hypoglycemia | abnormally low level of sugar in the blood |
| hypertension | abnormally high blood pressure |
| hypotension | low blood pressure |
| hyperthermia | especially high fever; hyperpyrexia |
| hypothermia | subnormal body temperature |
| hyperthyroid | marked by excessive activity of the thyroid gland |
| hypothyroid | marked by deficient activity of the thyroid gland |
| hyperactive | overactive |
| hyperbole | extravagant exaggeration of statement |
| hypercritical | overcritical |
| hyperemia | superabundance of blood |
| hyperopia | farsightedness |
| hypersensitive | excessively sensitive; supersensitive |
| hypertrophy | excessive growth or development, as of a body part |
| hypodermic | injected under the skin |
| hypothesis | theory or supposition assumed on a basis for reasoning |
| hypothetical | assumed without proof for the purpose of reasoning; conjectural |
| endocrine | secreting internally |
| exocrine | secreting externally |
| endogamy | marriage within the tribe, caste, or social group |
| exogamy | marriage outside the caste, tribe, or social group |
| endogeneous | produced from within; due to internal causes |
| exgeneous | produced from without; due to external causes |
| endoskeleton | internal skeleton or supporting framework in an animal |
| exoskeleton | hard protective structure developed outside the body |
| endosmosis | osmosis inward |
| exosmosis | osmosis outward |
| endocarditis | inflammation of the lining of the heart |
| endoderm | membranelike tissue lining the digestive tract |
| endoparasite | parasite living on the inside of its host |
| endophyte | plant growing within another plant |
| exoteric | known externally; commonly known |
| exotic | introduced from another country, foreign; strikingly unusual, strange |
| geocentric | measured from the earth's center; having the earth as a center |
| geodetic | pertaining to geodesy |
| geography | study of the earth's surface, climate, continents, people, products, etc. |
| geology | science dealing with the earth's history as recorded in rocks |
| geometry | mathematics dealing with lines, angles, surfaces, and solids |
| geomorphic | pertaining to the shape of the earth or the form of its surface |
| geophysics | science treating of the forces that modify earth |
| geopolitics | study of government and its policies as affected by physical geography |
| geoponics | art or science of agriculture |
| georgic | agricultural |
| georgic | poem about farming |
| geotropism | response to earth's gravity |
| apogee | farthest point from the earth in the orbit of a heavenly body |
| antipathy | aversion |
| apathy | lack of feeling, emotion, interest,or excitement; indifference |
| empathy | complete understanding of another's feelings |
| pathetic | arousing pity |
| pathos | quality in drama, speech, literature, music, or events that arouses a feeling of pity or sadness |
| sympathy | sharing of another's trouble |
| telepathy | transference of the thoughts and feelings of one person to another by no apparent means of communication |
| homeopathy | treatment of disease with minute doses of a remedy that, if given in massive doses to healthy persons, would produce effects like those of disease |
| osteopath | practitioner of osteopathy |
| pathogenic | causing disease |
| pathological | due to disease |
| psychopathic | pertaining to mental disease; insane |
| amorphous | having no definite form, shapeless, unorganized |
| anthromorphic | attributing human form or characteristics to beings not human, especially gods |
| dimorphous | occuring under two distinct forms |
| endomorphic | having a form deriving largely from the embryo's inner layer; having a heavy body build |
| heteromorphic | exhibiting diversity of form |
| metamorphosis | change of form |
| monomorphic | having a single form |
| morphology | branch of biology dealing with the form and structure of animals and plants |
| pericardium | membranous sac enclosing the heart |
| perigee | nearest point to the earth in the orbit of a heavenly body |
| perihelionn | nearest point to the sun in the orbit of a heavenly body |
| perimeter | whole outer boundary or measurement or a surface or figure |
| periodontics | branch of dentistry dealing with diseases of the bones and gum tissues supporting the teeth |
| peripatetic | traveling about; itinerant |
| peripheral | on the periphery, outside or away from the central part; only slightly connected with what what is essential, merely incidental |
| periphrastic | expressed in a roundabout way; circulocutory |
| periscope | instrument permitting those in a submarine to view the surface |
| peristalsis | wavelike contraction of the walls of the intestines, which propels contents onward |
| peristyle | row of columns around a building or court; the space so enclosed |
| peritonitis | inflammation of the peritoneum |