CHLOROPLAST

chloroplast

(noun) plastid containing chlorophyll and other pigments; in plants that carry out photosynthesis

Source: WordNet® 3.1


Etymology

Noun

chloroplast (plural chloroplasts)

(cytology) An organelle found in the cells of green plants, and in photosynthetic algae, where photosynthesis takes place.

Source: Wiktionary


Chlo"ro*plast, n. [Pref. chloro-+ Gr. to mold, form.] (Biol.)

Definition: 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.

Source: Webster’s Unabridged Dictionary 1913 Edition



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Word of the Day

29 May 2024

PERESTROIKA

(noun) an economic policy adopted in the former Soviet Union; intended to increase automation and labor efficiency but it led eventually to the end of central planning in the Russian economy


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