Definitions for: T


[n] hormone produced by the thyroid glands to regulate metabolism by controlling the rate of oxidation in cells; "thyroxine is 65% iodine"
[n] thyroid hormone similar to thyroxine but with one less iodine atom per molecule and produced in smaller quantity; exerts the same biological effects as thyroxine but is more potent and briefer
[n] the 20th letter of the Roman alphabet
[n] a unit of weight equivalent to 1000 kilograms
[n] one of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose)



Webster (1913) Definition: T (t[=e]),
the twentieth letter of the English alphabet, is a nonvocal
consonant. With the letter h it forms the digraph th, which
has two distinct sounds, as in thin, then. See Guide to
Pronunciation, [sect][sect]262-264, and also [sect][sect]153,
156, 169, 172, 176, 178-180. The letter derives its name and
form from the Latin, the form of the Latin letter being
further derived through the Greek from the Ph[oe]nician. The
ultimate origin is probably Egyptian. It is etymologically
most nearly related to d, s, th; as in tug, duke; two, dual,
L. duo; resin, L. resina, Gr. "rhti`nh, tent, tense, a.,
tenuous, thin; nostril, thrill. See D, S.

T bandage (Surg.), a bandage shaped like the letter T, and
used principally for application to the groin, or
perineum.

T cart, a kind of fashionable two seated wagon for pleasure
driving.

T iron.
(a) A rod with a short crosspiece at the end, -- used as a
hook.
(b) Iron in bars, having a cross section formed like the
letter T, -- used in structures.

T rail, a kind of rail for railroad tracks, having no
flange at the bottom so that a section resembles the
letter T.

T square, a ruler having a crosspiece or head at one end,
for the purpose of making parallel lines; -- so called
from its shape. It is laid on a drawing board and guided
by the crosspiece, which is pressed against the straight
edge of the board. Sometimes the head is arranged to be
set at different angles.

To a T, exactly, perfectly; as, to suit to a T. [Colloq.]

Synonyms: deoxythymidine monophosphate, liothyronine, metric ton, MT, tetraiodothyronine, thyroxin, thyroxine, tonne, triiodothyronine

See Also: alphabetic character, letter, letter of the alphabet, metric weight unit, nucleotide, quintal, Roman alphabet, thyroid hormone, weight unit

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