1. Of or pertaining to vegetables, or the vegetable kingdom; of the nature of a vegetable; vegetable. All creatures vegetal, sensible, and rational. (Burton)
2. (Science: biology) Of, pertaining to, or designating, that class of vital phenomena, such as digestion, absorption, assimilation, secretion, excretion, circulation, generation, etc, which are common to plants and animals, in distinction from sensation and volition, which are peculiar to animals.
Origin: F. Vegetal. See Vegetable.