/ Dictionary / Index T thine: Meaning and Definition of Find definitions for: thine Pronunciation: (īn), [key] — pron. the possessive case ofused as a predicate adjective, after a noun or without a noun. the possessive case ofused as an attributive adjective before a noun beginning with a vowel or vowel sound:Cf. thine eyes; thine honor. that which belongs to thee: Thine is the power and the glory. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. thin thin film Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language