/ Dictionary / Index A AEC: Meaning and Definition of Find definitions for: AEC Pronunciation: [key] See A.E.C. Pronunciation: [key] — Insurance. Insurance. additional extended coverage. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: aec (Thesaurus) A.E. and P. aechmea 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