1. an act of washing oneself: formal, humorous"the women performed their ablutions"
▪ a ceremonial act of washing parts of the body or sacred containers.formal, humorous
▪ (in army slang) a building or room containing washing facilities and toilets.formal, humorous
Word Originlate Middle English: from Latin ablutio(n-), from abluere, from ab- ‘away’ + luere ‘wash’. The original use was as a term in chemistry and alchemy meaning ‘purification by using liquids’, hence ‘purification of the body by washing’ (mid 16th century).