aerator

noun

Etymology: Etymology tree Proto-Indo-European *h₂ews- Proto-Indo-European *h₂ewsér Proto-Hellenic *auhḗr Ancient Greek ᾱ̓ήρ (āḗr)bor. Latin aer Proto-Indo-European *-h₂ Proto-Indo-European *-éh₂ Proto-Indo-European *-tós Proto-Indo-European *-eh₂tos Proto-Italic *-ātos Latin -ātuslbor. English -ate English aerate Proto-Indo-European *-tōr Proto-Italic *-tōr Latin -tor Latin -ātor Old French -eorbor. Middle English -our ▲ Latin -torlbor. English -or English aerator From aerate + -or.

1. A device which mixes air with a substance, particularly soil or a liquid.

   “faucet aerator”

2. A device used for charging mineral waters with gas and in making soda water.
3. A fumigator used to bleach grain, destroying fungi and insects.