Symbol, Chemistry.
  1. thorium.

Other definitions for -th (2 of 6)


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

Origin of -th

Middle English -th(e), Old English -thu, -tho, -th (variant -t after a velar, f, or s); cognate with Gothic -itha,Latin -tus,Greek -tos

Other definitions for -th (3 of 6)


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

Origin of -th

Middle English -the, -te,Old English -tha, -the (variant -ta after f or s); cognate with Old Norse -thi, -di,Latin -tus,Greek -tos;see -eth2

Other definitions for -th (4 of 6)


  1. variant of -eth1: doth.

Other definitions for Th. (5 of 6)


  1. Thursday.

Other definitions for T.H. (6 of 6)


  1. Territory of Hawaii. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use Th in a sentence

  • For the rest of the trip, Rizzo kept spelling out, in order, the letters r-h-i-n-o-c-e-r-o-s and a-n-t-h-r-o-p-o-i-d.

  • B r k b r k b r k  n t h y c l d g r y s t n s s, n d w l d t h t m y t n g c l d t t r T h t h g h t s t h t r s n m.

  • And lce wucan wircen t h man hte btan rim, n t middan-wintra, oeru t Estran, ridde to Gangdagan.

  • There was a girl once, very pretty, but she was called—I can never pronounce it—E-d-i-t-h—those are the letters.

    The Title Market | Emily Post
  • “T-h-e f-i-n-e-s-t s-i-l-k r-a-g-s,” he expostulated 95 again holding two fingers under the nose of Rags Habakuk.

    Rootabaga Stories | Carl Sandburg
  • For further particulars, apply to Mrs. C——l, of the C—s—le S—t—h—ll.

    The English Spy | Bernard Blackmantle

British Dictionary definitions for th (1 of 4)


the internet domain name for
  1. Thailand

British Dictionary definitions for Th (2 of 4)


the chemical symbol for
  1. thorium

British Dictionary definitions for -th (3 of 4)


suffix forming nouns
  1. (from verbs) indicating an action or its consequence: growth

  2. (from adjectives) indicating a quality: width

Origin of -th

from Old English -thu, -tho

British Dictionary definitions for -th (4 of 4)


  1. forming ordinal numbers: fourth; thousandth

Origin of -th

from Old English -(o) tha, -(o) the

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for Th


The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.