Definition of chloroplast in English:

chloroplast

noun

Botany
  • A plastid in green plant cells which contains chlorophyll and in which photosynthesis takes place.

    • ‘Fluorescence of guard cell chloroplasts was imaged when plants were at approximately the six-leaf stage.’
    • ‘As Zeiger et al. have recently emphasized, guard cell chloroplasts show remarkable functional plasticity.’
    • ‘Even in the late stages of leaf senescence, the chloroplasts of guard cells remain green and functional.’
    • ‘The outer layer of the abaxial epidermis contains sunken stomata with strongly fluorescing chloroplasts in the guard cells.’
    • ‘Ripening of tomato fruit involves the differentiation of chloroplasts in young green fruit into chromoplasts in mature ripe red fruit.’

Origin

Late 19th century coined in German from Greek khlōros ‘green’ + plastos ‘formed’.

Pronunciation

chloroplast

/ˈklɔːrə(ʊ)plast/ /ˈklɔːrə(ʊ)plɑːst/ /ˈklɒrə(ʊ)plast/ /ˈklɒrə(ʊ)plɑːst/