say it: KLAW-ruh-plast
chloroplast is a noun meaning "plastid containing chlorophyll and other pigments; in plants that carry out photosynthesis". It carries one recorded sense.
plastid containing chlorophyll and other pigments; in plants that carry out photosynthesis
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for chloroplast come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.