/ Dictionary / Index A aseismic: Meaning and Definition of Find definitions for: a•seis•mic Pronunciation: (ā-sīz'mik, -sīs'-), [key] — adj. Geol. free from earthquakes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ASEAN aseity Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language