Weldability

Part of speech: noun

Definitions

1. The degree to which a metal or other material can be joined by welding into a sound, strong bond
2. How well a substance is suited to being fused together by heat or pressure into a secure joint
3. The quality of a material that determines how easily and reliably it can be welded together

Etymology: Weldability is a plain compound: the verb "weld" with the suffix "-ability," which turns a verb into a noun for the quality of being able to undergo the action. The suffix itself comes through a long line of borrowings. It descends from Latin "-abilis," meaning "able to be" or "capable of," which was formed from "-ābilis" with the Latin "-itas" noun ending. That combination reached English through Middle French "-ablete" and Middle English "-ablete," and the form "-ability" took shape in English from there. "Weld" is the older and more interesting part of the story, but the source does not give its dates or history, so the word's meaning here rests on the plain sense: a metal or other material is fused into a secure joint by heat or pressure. The term "weldability" therefore names a property of materials, measuring how readily they can be joined in that way. Because the suffix is so productive, English speakers can build similar words from almost any verb, so "weldability" fits a common pattern rather than a single moment of coinage.