From Wiktionary, the free dictionary
From Latin postīcus (“posterior, hinder”).
postical (not comparable)
- (botany) Oriented towards the base.
- (botany) Of or pertaining to the surface of a prostrate thallus that is oriented towards the substrate.
- (antonym(s) of “towards the apex”): antical
- (antonym(s) of “of side away from substrate”): antical