nCollenchyma(Bot) A tissue of vegetable cells which are thickend at the angles and (usually) elongated.
Century Dictionary and Cyclopedia
The shape of a plants' collenchyma cells and the shape of the bubbles in beer foam are the same they are orthotetrachidecahedrons.
ncollenchymaIn botany, a layer of modified parenchyma immediately beneath the epidermis, having the cells thickened at the angles by a pad-like mass which is capable of swelling greatly in water. It is found in the young stems, petioles, and leaf-veins of many dicotyledonous plants.
Webster's Revised Unabridged Dictionary
NL., fr. Gr. ko`lla glue + an infusion. Formed like parenchyma,