The plant leaves are lateral outgrowth of the stem which develop from the meristematic tissues of buds. They are the part of the plant shoot which serves as the chief food-producing organ in most vascular plants.
Adjective[edit] ad hoc â(comparative more ad hoc, superlative most ad hoc) 1  For a particular purpose. 2  Created on the spur of the moment; impromptu. ( sciences) (of a hypothesis) Postulated solely to save a theory from being falsified, without making any new predictions.
post hoc. (hÅk, hÅk) adv. & adj. In or of the form of an argument in which one event is asserted to be the cause of a later event simply by virtue of having happened earlier: grasping at reasons post hoc; a post hoc fallacy.