Main Entry: plas·tid

Pronunciation: \ˈplas-təd\

Function: noun

Etymology: German, from Greek plastos molded

Date: 1885

: any of various cytoplasmic organelles (as an amyloplast or chloroplast) of photosynthetic cells that serve in many cases as centers of special metabolic activities

— plas·tid·i·al \pla-ˈsti-dē-əl\ adjective