/ Dictionary / Index S siliqua: Meaning and Definition of Find definitions for: sil•i•qua Pronunciation: (sil'i-kwu), [key] — pl. -quae a silver coin of the later Roman Empire, the 24th part of a solidus, first issued by Constantine. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: siliqua (Thesaurus) siliculose silique Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language