/ Dictionary / Index T thalassocracy: Meaning and Definition of Find definitions for: thal•as•soc•ra•cy Pronunciation: (thal"u-sok'ru-sē), [key] — pl. -cies. dominion over the seas, as in exploration, trade, or colonization. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. thalasso- thalassocrat Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language