/ Dictionary / Index T Thanatos: Meaning and Definition of Find definitions for: Than•a•tos Pronunciation: (than'u-tos", -tōs), [key] — n. an ancient Greek personification of death. (usually l.c.) the death instinct, esp. as expressed in violent aggression. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: thanatos (Thesaurus) thanatopsis thane Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language