| 单词 | chlorophyll |
| 释义 | chlorophyll (once / 15844 pages) n Chlorophyll makes plants green. It's basically a group of green pigments used by organisms that convert sunlight into energy via photosynthesis. First used in 1819, the noun chlorophyll derives from the Greek words khloros, meaning "pale green" and phyllon, meaning "a leaf." Plants use chlorophyll to trap energy from the sun. Without this energy, plants would be unable to initiate the process of photosynthesis, which converts water and carbon dioxide into starches that plants can use for food. WORD FAMILYchlorophyll: chlorophyllous, chlorophylls USAGE EXAMPLESNature exploits a number of common metals in biochemistry: notable cases include iron in red blood cells and magnesium in chlorophyll. Nature(Nov 23, 2016) From chlorophyll pills to cholrophyll energy bars, the green pigment has been showing up in all sorts of products lately. Time(Nov 21, 2016) Inside the palisade cells, in structures called chloroplasts, most of the leaf’s business of photosynthesis is carried on using the familiar green pigment called chlorophyll. New York Times(Nov 21, 2016) n any of a group of green pigments found in photosynthetic organisms; there are four naturally occurring forms Syn|Hypo|Hyper chlorophyl chlorophyll a a blue-black plant pigment having a blue-green alcohol solution; found in all higher plants chlorophyll ba dark-green plant pigment having a brilliant green alcohol solution; generally characteristic of higher plants chlorofucin, chlorophyll cthe chlorophyll present in brown algae, diatoms, and flagellates chlorophyll dthe chlorophyll found (together with chlorophyll a) in red algae pigment dry coloring material (especially a powder to be mixed with a liquid to produce paint, etc.) |
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