Breadcrumb Home > Dictionary > Index A aciculum: Meaning and Definition of Find definitions for: a•cic•u•lum Pronunciation: (u-sik'yu-lum), [key] — pl. -lums, -la an acicula. one of the slender, sharp stylets embedded in the parapodia of certain annelid worms, as the polychaetes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. aciculate acid TrendingHere are the facts and trivia that people are buzzing about. Did Birds Evolve from Dinosaurs? The Twelve Dancing Princesses Current Events This Week: January 2023 African Americans by the Numbers Andersen's Fairy Tales: Contents The Celtic Twilight: A Teller of Tales ✖ Related Content Daily Word Quiz: catalpa Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language