Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
achromatinic is an adjective meaning "(of substance of a cell nucleus) not readily colored by stains". It carries one recorded sense.
(of substance of a cell nucleus) not readily colored by stains
Definitions, synonyms and semantic relations for achromatinic come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.