Definition of Chloraplast
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.
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's Unabridged Dictionary (1913)
- (biology) an organelle found in the cells of green plants, and in photosynthetic algae, where photosynthesis takes place.
- The Nuttall Encyclopedia
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