Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
nonechoic is an adjective meaning "not echoic or imitative of sound". It carries one recorded sense.
not echoic or imitative of sound
Definitions, synonyms and semantic relations for nonechoic come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.