English
infraphylum
From infra- + phylum.
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 *bʰuH- ‘to be, grow’
Proto-Indo-European *bʰuH-lom
Ancient Greek φῡλή ‘tribe’
Ancient Greek φῦλον ‘tribe, race’
Latin phylum
English phylum
Today it means
noun A taxon below subphylum and above superclass.
Language periods are conventional ranges, not dates for this word.
Etymograph / infraphylum