/ Dictionary / Index T Th: Meaning and Definition of Find definitions for: Th Pronunciation: [key] — Symbol, Chem. thorium. Th 227 Pronunciation: [key] — Symbol, Chem. radioactinium. -th Pronunciation: [key] a suffix forming nouns of action (birth) or abstract nouns denoting quality or condition (depth; length; warmth). -th Pronunciation: [key] a suffix used in the formation of ordinal numbers (fourth, tenth), in some cases, added to altered stems of the cardinal (fifth; twelfth). -th Pronunciation: [key] var. ofdoth. Th. Pronunciation: [key] Thursday. T.H. Pronunciation: [key] Territory of Hawaii. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: th (Thesaurus) TGV thā Related Content Daily Word Quiz: tenacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language