English
infrasection
From infra- + section.
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 *sek- ‘to cut’
…
Latin sectus ‘cut’
Latin sectiō ‘cutting’
Old French section
Middle English seccioun
English section
Today it means
noun a taxon below the rank of section
Language periods are conventional ranges, not dates for this word.
Etymograph / infrasection