Th Definition | Definition of Th at Dictionary.com

Th

Use Th in a Sentence

Symbol, Chemistry.

thorium.

-th

a suffix forming nouns of action (birth) or abstract nouns denoting quality or condition (depth; length; warmth).

Origin:
ME -th(e), OE -thu, -tho, -th (var. -t after a velar, f, or s); c. Goth -itha, L -tus, Gk -tos

-th

a suffix used in the formation of ordinal numbers (fourth, tenth), in some cases, added to altered stems of the cardinal (fifth; twelfth).

Origin:
ME -the, -te, OE -tha, -the (var. -ta after f or s); c. ON -thi, -di, L -tus, Gk -tos; see -eth

-th

var. of -eth ¹ : doth.

Th.

Thursday.

T.H.

Territory of Hawaii.

-eth

an ending of the third person singular present indicative of verbs, now occurring only in archaic forms or used in solemn or poetic language: doeth or doth; hopeth; sitteth.

Also, -th.

Origin:
OE -eth, -ath, -oth, -th; akin to L -t

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Link To Th

Th¹
The symbol for the element thorium.

Th²
abbr.

Bible Thessalonians
Thursday

Thes·sa·lo·ni·ans (thěs'ə-lō'nē-ənz)

pl.n. (used with a sing. verb)
Abbr. Thess. or Thes. or Th See Table at Bible.

tho·ri·um (thôr'ē-əm, thōr'-)

n. Symbol Th
A radioactive silvery-white metallic element that is recovered commercially from monazite. Its longest-lived isotope, the only one that occurs naturally, is Th 232 with a half-life of 1.41 × 10¹⁰ years. It is used in magnesium alloys, and isotope 232 is a source of nuclear energy. Atomic number 90; atomic weight 232.038; approximate melting point 1,750°C; approximate boiling point 4,500°C; approximate specific gravity 11.7; valence 4. See Table at element.

[After Thor.]

Thurs·day (thûrz'dē, -dā')

n. Abbr. Thurs. or Thur. or Thu. or Th or T
The fifth day of the week.

[Middle English, from Old English thūres dæg, alteration (influenced by Old Norse thōrsdagr, Thor's day) of thunres dæg, Thor's day (translation of Late Latin Iovis diēs, Jupiter's day) : thunres, genitive of thunor, thunder; see (s)tenə- in Indo-European roots + dæg, day; see day.]
Thurs'days adv.

The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Th\ In Old English, the article the, when the following word began with a vowel, was often written with elision as if a part of the word. Thus in Chaucer, the forms thabsence, tharray, thegle, thend, thingot, etc., are found for the absence, the array, the eagle, the end, etc.

Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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Main Entry: Th
Function: symbol
thorium

Th
The symbol for the element thorium.

Th
The symbol for thorium.

thorium (thôr'ē-əm) Pronunciation Key
Symbol Th
A silvery-white, radioactive metallic element of the actinide series. It is used for fuel in some nuclear reactors and for improving the high-temperature strength of magnesium alloys. The only naturally occurring isotope of thorium, Th 232, is also its most stable, having a half-life of 14.1 billion years. Atomic number 90; atomic weight 232.038; approximate melting point 1,750°C; approximate boiling point 4,500°C; approximate specific gravity 11.7; valence 4. See Periodic Table.

th networking
The country code for Thailand.
(1999-01-27)

th
Thai

Thessalonians
thorium
Thursday

TH
townhouse

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