PAREN'CHYMA, noun [Gr. to suffuse.] 1. In anatomy, the solid and interior part of the viscera, or the substance contained in the interstices between the blood vessels of the viscera; a spungy substance. Parenchyma is the substance or basis of the glands. 2. In botany, the pith or pulp of plants.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI