'Space suit' definitions:

Definition of 'Space suit'

From: GCIDE

Space suit \Space suit\, n. a protective suit covering the whole body, completely airtight and designed to withstand internal pressure, worn by astronauts to protect them from the vacuum and other hazards of outer space. It typically contains an air supply and other life-support equipment to allow functioning independent of any other equipment for a period of time while in space. [PJC]