(grammar) prepositional case

(attributive, computing, typography, of an East Asian character or glyph) the state of being fullwidth and full-height which, in early computer encoding, occupies 2 bytes, and in modern typography, equals 1 em

prerequisite

certainty, inevitability, necessity

the front, the part in front / façade

nature, specifically its personification Mother Nature

perfect, flawless

perfection

(aeronautics) leading edge

improvement, an action taken to improve / improvement, a spontaneous change for the better