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parenchyma

Term: parenchyma
Literally meaning: “that which is poured in”
Origin: Anc Greek
παρα-/para-(=pefix denoting  “beside”, “near”)  
+έγχυμα/enchyma( = infusion or juice) > εν-/en-(=with) +εγχέω/enheo-(=pur).
Coined/History
  1. By English botanist and plant physiologist Nehemiah  Grew (1628 - 1711). Grew stated that every plant organ had two parts, a ligneous (woody) and a pithy part composed of undifferentiated cells with air spaces bettween them.  
Definition
  1. (histology) The functional tissue characteristic of an organ, as distinguished from the capsule that encompasses  it or supporting tissues
  2. (botany) The primary tissue of higher plants, composed of thin-walled and usually undifferentiated cells

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