parenchyma

The tissue characteristic of an organ, as distinguished from associated connective or supporting tissues.

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.

In anatomy and zoology: The proper tissue or substance of any part or organ, as distinguished from the connective or other sustentacular tissue which it contains.

The undifferentiated body-substance or chyme-mass of the unicellular animal, as an infusorian; indistinguishable cell-substance; endoplasm.

The general substance of the interior of the parenchymatous worms.

In botany, the fundamental cellular tissue of plants: contradistinguished from prosenchyma, or fibrovascular tissue.

Also parenchyme.

The soft cellular substance of the tissues of plants and animals, like the pulp of leaves, the soft tissue of glands, and the like.

The functional part of an organ, as opposed to supporting tissue.

The ground tissue making up most of the non-woody parts of a plant.