English
affinoid
From affine + -oid.
Formed from affine + -oid
Proto-Indo-European *h₂éd ‘to, at’
Proto-Italic *ad ‘toward, to, on, up to, for’
Latin ad ‘toward, to (direction)’
Latin fīnis ‘boundary’
Latin affinis ‘neighbouring, allied to, kindred’
English affine
Today it means
adj affine in most respects
Language periods are conventional ranges, not dates for this word.
Etymograph / affinoid