Any of various minute plants or other photosynthetic organisms, such as cyanobacteria and diatoms.
To burn or sear with a cautery
the practice of certain animals of feeding on blood
Any of various instruments for measuring pressure or tension.
An optical instrument with two eyepieces used to impart a three-dimensional effect to two photographs of the same scene taken at slightly different angles.
The process of inducing or entering sleep or a hypnotic state.
A mineral crystallizing in another mineral in the form of a branching or treelike mark.
Surgical repair or alteration of bone
Any of various climbing tropical American plants
A quality, as of an experience or a work of art, that arouses feelings of pity, sympathy, tenderness, or sorrow.
The ability to identify with or understand the perspective, experiences, or motivations of another individual and to comprehend and share another individual's emotional state.
An optical instrument that uses a lens or a combination of lenses to produce magnified images of small objects, especially of objects too small to be seen by the unaided eye.
To change into bone; become bony.
Contradiction or opposition, especially between two laws or rules.
The dental specialty that deals with extraction of teeth.
Deviation or departure from the normal or common order, form, or rule.
Characterized by a narrow, often ostentatious concern for academic knowledge and formal rule
A great, often sudden calamity.
Pictorial illustration of a subject.
The study of plants; botany.
The design and construction of aircraft.
Abnormal smallness of the head.
Having two heads.
In mathematics, A closed line bounding a plane area.
Any of various acute or chronic neoplastic diseases of the bone marrow in which unrestrained proliferation of white blood cells occurs, usually accompanied by anemia, impaired blood clotting, and enlargement of the lymph nodes, liver, and spleen.
A localized swelling filled with blood resulting from a break in a blood vessel.
A comprehensive reference work containing articles on a wide range of subjects or on numerous aspects of a particular field, usually arranged alphabetically.
The use of hypnosis to treat disorders such as addictions, phobias, and depression, to change unwanted habits and behaviors, to induce relaxation, and to complement psychotherapy.
Total or partial loss of sensation, especially tactile sensibility, induced by disease, injury, acupuncture, or an anesthetic, such as chloroform or nitrous oxide.
Resembling a tooth.
The application of statistics and mathematical analysis to a specified field of study
A disorder characterized by sudden and uncontrollable, though often brief, attacks of deep sleep, sometimes accompanied by paralysis and hallucinations.
Attempted instruction in a subject during sleep, usually by means of recordings.
uperscript sign ( ' ), usually used to indicate the omission of a letter or letters from a word, the possessive case, or the plurals of numbers, letters, and abbreviations.
An arrangement of lenses or mirrors or both that gathers light, permitting direct observation or photographic recording of distant objects.
A recent convert to a belief; a proselyte.
A fictitious name, especially a pen name.
Opposition to icons or other forms of sacred imagery.
The botanical study of trees and other woody plants.
The branch of anatomy that deals with the structure and function of bones.
One of two or more words that have the same sound and often the same spelling but differ in meaning, such as bank (embankment) and bank (place where money is kept).
An atmospheric system characterized by the rapid inward circulation of air masses about a low-pressure center, usually accompanied by stormy, often destructive weather. Cyclones circulate counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere.
Of, relating to, or produced by motion.
Great destruction resulting in the extensive loss of life, especially by fire.
Excessive discharge of blood from the blood vessels; profuse bleeding.
The study of the anatomy, physiology, and mechanics of body movement, especially in humans.
A Christian feast celebrating the manifestation of the divine nature of Jesus to the Gentiles as represented by the Magi, traditionally observed on January 6
A band of tough, inelastic fibrous tissue that connects a muscle with its bony attachment.
A condition characterized by lack of response to external stimuli and by muscular rigidity, so that the limbs remain where they are positioned. It occurs in a variety of physical and psychological disorders, such as epilepsy and schizophrenia, and can be induced by hypnosis.
An inscription on a tombstone in memory of the one buried there.
A congenital abnormality of the skull in which the top of the head assumes a conical or pointed shape.
The branch of medicine that deals with the care and treatment of infants, children, and adolescents.
The medical study and application of anesthetics.
An instrument used to measure the rotations per minute of a rotating shaft.
a person who caches or hoards books
The branch of philosophy that deals with the nature, expression, and perception of beauty, as in the fine arts.
Of or relating to tension.
A word or name that is used secretly to refer to another; a code name or code word.