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thorn , in botany

(Encyclopedia)thorn, sharp-pointed projection on some plants, usually protective in function. Botanically, thorns are distinguished as modified stems (as in the honey locust and hawthorn) from spines, which are mod...

thrush , in zoology

(Encyclopedia)thrush, bird, common name for members of the Turdidae, a large family of birds found in most parts of the world and noted for their beautiful song. The majority are modestly colored, with spotted unde...

thrush , in medicine

(Encyclopedia)thrush, in medicine, infection caused by the fungus Candida albicans, manifested by white, slightly raised patches on the mucous membrane of the tongue, mouth, and throat. The mucous membrane beneath ...

time , in music

(Encyclopedia)time, in music: see tempo; meter; rhythm; syncopation; metronome and musical notation. ...

timothy , in botany

(Encyclopedia)timothy or herd's-grass, perennial plant (Phleum pratense) of the family Poaceae (grass family), native to Europe and W Asia and one of the most widely cultivated hay grass of North America. Adaptable...

Titan , in astronomy

(Encyclopedia)Titan tīˈtən [key], in astronomy, the largest of the named moons, or natural satellites, of Saturn. Also known as Saturn VI (or S6), Titan is 3,200 mi (5,150 km) in diameter, orbits Saturn at a mea...

torpedo , in zoology

(Encyclopedia)torpedo, fish: see ray.

transcendentalism , in philosophy

(Encyclopedia)transcendentalism, in philosophy, term descriptive of systems that hold that there are modes of being and principles of existence beyond the reach of mundane experience and manipulation. The term is n...

Uranus , in astronomy

(Encyclopedia)Uranus yo͝orāˈnəs, yo͝orˈə– [key], in astronomy, 7th planet from the sun, at a mean distance of 1.78 billion mi (2.87 billion km), with an orbit lying between those of Saturn and Neptune; its...

sol, in chemistry

(Encyclopedia)sol, in chemistry: see colloid.