Other forms: wetsuits
A wetsuit is a tight rubber suit that keeps a swimmer warm. Pull on a wetsuit, a thick wetsuit, wetsuit boots.
It works by letting a thin layer of water in and holding it there to be warmed by the body, which is why it must fit tightly — a loose one flushes and chills you. A drysuit does the opposite and keeps water out. Note that the compound says exactly what it is.
1nounwetsuitA tight rubber suit that keeps a swimmer warm.
“The sea was cold, so we pulled on our wetsuits before going surfing.”
wetsuit is a garment.
Wet plus suit, named because it works by trapping water rather than excluding it.
From wet + suit.
Etymology from Wiktionary, CC BY-SA