noun, plural pro·pri·e·tar·ies.
Origin of proprietary
British Dictionary definitions for non-proprietary
noun plural -taries
- right to property
- property owned
Word Origin for proprietary
Word Origin and History for non-proprietary
mid-15c., "possessing worldly goods in excess of a cleric's needs," from Medieval Latin proprietarius "owner of property," noun use of Late Latin adjective proprietarius "of a property holder," from Latin proprietas "owner" (see property). Meaning "held in private ownership" is first attested 1580s. The word was used earlier in English as a noun meaning "proprietor," also "worldly person" (c.1400), from a noun use in French and Medieval Latin.