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