| Term | Definition |
| anatomy | 1. dissection of plants, animals, or anything else for the purpose of studying their structure 2. structure of a plant of animal |
| appendectomy | surgical removal of the appendix |
| atom | smallest particle of an element |
| atomizer | device for converting a liquid to a fine spray |
| dichotomy | division |
| gastrectomy | surgical removal of part or all of the stomach |
| lobotomy | brain surgery for treatment of certain mental disorders |
| mastectomy | surgical removal of a breast |
| phlebotomy | opening of a vein to diminish the blood supply |
| tome | scholarly book |
| tonsillectomy | surgical removal of the tonsils |
| tracheotomy | surgical operation of cutting into the trachea |
| antipodes | parts of the globe (or their inhabitants) diametrically opposite |
| arthropod | any invertebrate with jointed legs |
| chiropodist | one who treats ailments of the human foot |
| dipody | dimeter |
| podiatrist | chiropodist |
| podium | 1. raised platform 2. low wall serving as a foundation |
| pseudopod (or pseudopodium) | 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 |
| heterochromatic | having different colors |
| homogeneous | similar |
| heterogeneous | dissimilar |
| homology | fundamental similarity of structure |
| heterology | lack of correspondence between parts |
| homomorphic | exhibiting similarity of form |
| heteromorphic | exhibiting diversity of form |
| homonym | word that sounds like another but differs in meaning and spelling |
| heteronym | word spelled like another, but differing in sound and meaning |
| homocentric | having the same center |
| homophonic | having the same sound (ant. polyphonic) |
| heteroclite (adj.) | abnormal |
| heteroclite (n.) | person or thing deviating from the common rule |
| heterodox | unorthodox |