/ Dictionary / Index A aeropause: Meaning and Definition of Find definitions for: aer•o•pause Pronunciation: (âr'u-pôz"), [key] — n. Aeron. the indefinite boundary in the upper atmosphere beyond which the air is too thin for conventional aircraft to operate. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. aeronomy Aërope Related Content Daily Word Quiz: acerbity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language