patio

The word 'patio' entered English in the early 19th century, borrowed directly from Spanish. In Spanish, 'patio' originally meant an inner courtyard or open space of a house, a usage which itself evolved from the Old Spanish 'patio' meaning perhaps a pasture or open ground. The Spanish term is ultimately derived from the Latin 'patēre', meaning 'to lie open' or 'to be open'. The conceptual journey, therefore, is from the Latin idea of an open space to the specific Spanish architectural feature of a courtyard, and finally to the modern English meaning of a paved, outdoor leisure area attached to a home.

This word is a direct loanword from Spanish. It does not contain separable morphemes within its current English spelling.