English

infrathreshold

From infra- + threshold.

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’

Middle English threschwolde ‘a door-sill’

Today it means

adj Below a specific threshold

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

Etymograph / infrathreshold