Breadcrumb Home > Dictionary > Index A astrionics: Meaning and Definition of Find definitions for: as•tri•on•ics Pronunciation: (as"trē-on'iks), [key] — n. (used with a sing. v.) Rocketry. the science dealing with the application of electronics to astronautics. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. astringer astro- TrendingHere are the facts and trivia that people are buzzing about. Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 12 Steps to a New Year New Year's Resolution to Slim Down? Martin Luther King Speeches Books of the Bible: Old Testament Books in Order ✖ Related Content Daily Word Quiz: spurious Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language