transpiration (redirected from transpirations)

tran·spi·ra·tion  (trnsp-rshn)

n.

The act or process of transpiring, especially through the stomata of plant tissue or the pores of the skin.

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transpi·ration·al adj.

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transpiration  (trnsp-rshn) The process of giving off vapor containing water and waste products, especially through the stomata on leaves or the pores of the skin. A Closer Look Plants need much more water than animals do. But why? Plants use water not only to carry nutrients throughout their tissues, but also to exchange gases with the air in the process known as transpiration. Air, which contains the carbon dioxide that plant cells need for photosynthesis, enters the plant mainly through the stomata (tiny holes under its leaves). The air travels through tiny spaces in the leaf tissue to the cells that conduct photosynthesis. These cells are coated with a thin layer of water. The cell walls do not permit gases to pass through them, but the carbon dioxide can move across the cell walls by dissolving in the water on their surface. The cells remove the carbon dioxide from the water and use the same water to carry out oxygen, the main waste product of photosynthesis. All this mixing of water and air in transpiration, though, has one drawback: more than 90 percent of the water that a plant's roots suck up is lost by evaporation through the stomata. This is why a plant always needs water and why plants that live in dry climates, such as cacti, have reduced leaf surfaces from which less water can escape.

transpiration

Thesaurus

Noun	1.	transpiration - the passage of gases through fine tubes because of differences in pressure or temperature natural action, natural process, action, activity - a process existing in or produced by nature (rather than by the intent of human beings); "the action of natural forces"; "volcanic activity"
	2.	transpiration - the process of giving off or exhaling water vapor through the skin or mucous membranes bodily function, bodily process, body process, activity - an organic process that takes place in the body; "respiratory activity"
	3.	transpiration - the emission of water vapor from the leaves of plants biological process, organic process - a process occurring in living organisms

Translations

transpiration [ˌtrænspɪˈreɪʃən] N → transpiración f

transpiration

n (Anat) → Schweißabsonderung f, → Transpiration f; (Bot) → Transpiration f, → Ausdunstung f

transpiration [ˌtrænspɪˈreɪʃ/ən] n → traspirazione f