Breadcrumb Home > Dictionary > Index U ultrasonics: Meaning and Definition of Find definitions for: ul•tra•son•ics Pronunciation: (ul"tru-son'iks), [key] — n. (used with a sing. v.) the branch of science that deals with the effects of sound waves above human perception. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ultrasonic ultrasonography TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: preternatural Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language