parenchyma
UK[pəˈreŋkɪmə]US[pəˈreŋkɪmə]
n
the functional tissue in an animal organ or plant structure, as distinct from the connective or supporting tissue.
n
the soft, cellular, typically unspecialized tissue forming the main substance of plant leaves, roots, and stems.
Morpheme Breakdown
para
enchyma
para
beside
enchyma
infusion
Etymology
the term parenchyma originates from ancient greek, where 'para-' meant "beside" and 'enchyma' referred to something poured in or an infusion. it was used by the physician erasistratus to describe the substance supposedly "poured in" beside the blood vessels in organs. this literal sense of a material infused around structures evolved through medieval and renaissance anatomy to denote the essential, functional tissue of an organ, as opposed to its supportive framework. in botany, the term was later adopted in the 17th century to describe the fundamental, living ground tissue of plants, completing its journey from a physiological concept of infused material to a precise histological term for functional cellular tissue.
Analysis
Structure: para (beside) + enchyma (infusion)
para: from greek, meaning "beside, alongside of".
enchyma: from greek 'enchyma', meaning "infusion, something poured in", from 'en-' (in) + 'chein' (to pour).
Examples
the liver's parenchyma is responsible for its metabolic functions.
in plants, parenchyma cells are involved in photosynthesis, storage, and secretion.
the biopsy examined whether the disease had affected the lung parenchyma.