parenchyma(redirected from Parenchymal cells)
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1. Anatomy The tissue characteristic of an organ, as distinguished from associated connective or supporting tissues.
2. Botany A simple plant tissue, composed of thin-walled cells and forming the greater part of leaves, roots, the pulp of fruit, and the pith of stems.
[New Latin, from Greek parenkhuma, visceral flesh, from parenkhein, to pour in beside : para-, beside; see para-1 + en-, in; see en in Indo-European roots + khein, to pour; see gheu- in Indo-European roots.]
pa·ren′chy·mal, par′en·chym′a·tous (păr′ĕn-kĭm′ə-təs) adj.
1. (Botany) unspecialized plant tissue consisting of simple thin-walled cells with intervening air spaces: constitutes the greater part of fruits, stems, roots, etc
2. (Zoology) animal tissue that constitutes the essential or specialized part of an organ as distinct from the blood vessels, connective tissue, etc, associated with it
3. (Zoology) loosely-packed tissue filling the spaces between the organs in lower animals such as flatworms
[C17: via New Latin from Greek parenkhuma something poured in beside, from para-1 + enkhuma infusion]
parenchymatous, parenchymal adj
pa•ren•chy•ma(pəˈrɛŋ kə mə)
1. the fundamental tissue of plants, composed of thin-walled cells able to divide.
2. the functional tissue of an animal organ as distinguished from its connective or supporting tissue.
3. a spongy connective tissue of certain invertebrates.
[1645–55; < New Latin < Greek parénchyma literally, something poured in beside =par- par- + énchyma infusion; see mesenchyme]
pa•ren′chy•mal, par•en•chym•a•tous (ˌpær əŋˈkɪm ə təs) adj.
The basic tissue of plants, consisting of thin-walled, nonspecialized cells that sometimes adapt to specialized functions. The internal layers of leaves, the cortex and pith of the stem, and the soft parts of fruits are made of parenchyma. In higher plants, parenchyma supports the plant body, roots, and leaves; it also stores water and contains chloroplasts in which photosynthesis takes place.
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|Noun||1.||parenchyma - animal tissue that constitutes the essential part of an organ as contrasted with e.g. connective tissue and blood vessels|
animal tissue - the tissue in the bodies of animals
|2.||parenchyma - the primary tissue of higher plants composed of thin-walled cells that remain capable of cell division even when mature; constitutes the greater part of leaves, roots, the pulp of fruits, and the pith of stems|
plant tissue - the tissue of a plant
pith - soft spongelike central cylinder of the stems of most flowering plants
chlorenchyma - parenchyma whose cells contain chloroplasts
root - (botany) the usually underground organ that lacks buds or leaves or nodes; absorbs water and mineral salts; usually it anchors the plant to the ground