English

has-a

From has + a.

A compound of has + a

Middle English has

English has

Proto-Indo-European *h₁óynos ‘one’

Proto-Germanic *ainaz ‘one’

Proto-West Germanic *ain ‘one’

Old English ān ‘one; a certain’

Middle English a

English a

Today it means

noun The relationship between a class and any member of that class in object-oriented computer programming.

Language periods are conventional ranges, not dates for this word.