English

trifold

From tri- + -fold.

Formed from tri + fold

Proto-Indo-European *tréyes ‘three’

English tri

Proto-Indo-European *pel- ‘to fold’

Proto-Germanic *falþaną ‘to fold’

Proto-West Germanic *falþan ‘to fold’

Old English fealdan ‘to fold’

Middle English folden ‘to fold’

English fold

Today it means

adj threefold

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