Paren is short for parenthesis, which is a punctuation mark that encloses comments or information within a sentence, or is used in math equations.
An example of a paren is the mark on either side of the last word in this sentence (mostly).
- (informal) A parenthesis (bracket used to enclose parenthetical material in text).
Abbreviation of parenthesis.
- The relation ~ of the laticiferous tissue to the assimi I lating cells under which they often end, and the fact that where this tissue is / richly developed the conducting paren ~ chyma of the bundles, and sometimes also 4 the sieve-tubes, are poorly developed, as well as various other facts, point to the conclusion that the laticiferous system has an important function in conducting plastic substances, in addition to acting as an excretory reservoir.
- The paren.chymatous cells, found in various parts of the plant.
- The peripheral paren chyma gives rise to protonephridia, that is to coiled tubes commencing in pyriform cells containing a flame-like bundle of cilia and provided with branched outgrowths, and communicating with the exterior by long convoluted canals which open at the surface of the body.