/ Dictionary / Index A attested form: Meaning and Definition of Find definitions for: attest'ed form' Pronunciation: [key] a linguistic form actually in use or found in written records, in contrast to one that is hypothesized or reconstructed. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. attestation att. gen. Related Content Daily Word Quiz: ounterfeit Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language