chlorophyll


chlo·ro·phyll

noun \ˈklr-ə-ˌfil, -fəl\

: the green substance in plants that makes it possible for them to make food from carbon dioxide and water

Full Definition of CHLOROPHYLL

1
:  the green photosynthetic pigment found chiefly in the chloroplasts of plants and occurring especially as a blue-black ester C55H72MgN4O5 or a dark green ester C55H70MgN4O6 —called also chlorophyll a, chlorophyll b
2
:  a waxy green chlorophyll-containing substance extracted from green plants and used as a coloring agent or deodorant
chlo·ro·phyl·lous \ˌklr-ə-ˈfi-ləs\ adjective

Origin of CHLOROPHYLL

French chlorophylle, from chlor- + Greek phyllon leaf — more at blade
First Known Use: 1819

chlo·ro·phyll

noun \ˈklōr-ə-ˌfil, ˈklr-, -fəl\   (Medical Dictionary)

Medical Definition of CHLOROPHYLL

1
: the green photosynthetic coloring matter of plants found in chloroplasts and made up chiefly of a blue-black ester C55H72MgN4O5 and a dark green ester C55H70MgN4O6—called also chlorophyll a, chlorophyll b
2
: a waxy green chlorophyll-containing substance extracted from green plants and used as a coloring agent or deodorant
chlo·ro·phyl·lous \ˌklōr-ə-ˈfil-əs, ˌklr-\ also chlo·ro·phyl·lose \-ˈfil-ˌōs, -(ˌ)fil-ˈ\ adjective

chlorophyll

noun    (Concise Encyclopedia)

Any member of one of the most important classes of pigment molecules involved in photosynthesis. Found in almost all photosynthetic organisms, it consists of a central magnesium atom surrounded by a nitrogen-containing structure called a porphyrin ring, to which is attached a long carbon-hydrogen side chain, known as a phytol chain. In structure it is remarkably similar to hemoglobin. Chlorophyll uses energy that it absorbs from light to convert carbon dioxide to carbohydrates. In higher plants it is found in chloroplasts.

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