English
infratribe
From infra- + tribe.
Proto-Indo-European *bʰer- ‘to bear, carry’
…
Proto-Italic *ferō ‘to carry, bear’
Latin ferō ‘to bear’
Latin īnferō ‘to carry, bring, put, place, or throw in,…’
Latin īnfrā ‘below’
English infra-
Proto-Indo-European *tréyes ‘three’
…
Latin trēs ‘three’
Latin tribus ‘one of the three original tribes of Rome:…’
Old French tribu
Middle English tribe ‘one of the twelve tribes of Israel’
English tribe
Today it means
noun A taxonomic rank below subtribe.
Language periods are conventional ranges, not dates for this word.
Etymograph / infratribe