Chloroplast

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Chloroplast \Chlo"ro*plast\, n. [Pref. chloro- + Gr. ? to mold,
     form.] (Biol.)
     A plastid containing chlorophyll, developed only in cells
     exposed to the light. Chloroplasts are minute flattened
     granules, usually occurring in great numbers in the cytoplasm
     near the cell wall, and consist of a colorless ground


     substance saturated with chlorophyll pigments. Under light of
     varying intensity they exhibit phototactic movements. In
     animals chloroplasts occur only in certain low forms.
     [Webster 1913 Suppl.]

From WordNet (r) 2.0 [wn]:

  chloroplast
       n : plastid containing chlorophyll and other pigments; in plants
           that carry out photosynthesis