Etymology
Advertisement

proprietary (adj.)

mid-15c., of clerics, "possessing worldly goods in excess of needs," from Medieval Latin proprietarius "owner of property," noun use of Late Latin adjective proprietarius "of a property holder," from Latin proprietas "ownership; a property" (see property). Meaning "held in private ownership, belonging to an owner" is attested from 1580s.

proprietary (n.)

c. 1400, "proprietor, one who possesses or holds the title to a thing," also "worldly person, person tied to worldly goods or personal comforts," from noun uses of Old French proprietaire and Medieval Latin proprietarius "of a property owner" (see proprietary (n.)). From 1630s in reference to the American colonies, "grantee or owner of a colony" (called proprietary colonies in distinction from charter colonies and royal colonies or provinces.

Others are reading

Advertisement
Advertisement
Definitions of proprietary
1
proprietary (n.)
an unincorporated business owned by a single person who is responsible for its liabilities and entitled to its profits;
Synonyms: proprietorship
2
proprietary (adj.)
protected by trademark or patent or copyright; made or produced or distributed by one having exclusive rights;
`Tylenol' is a proprietary drug of which `acetaminophen' is the generic form
From wordnet.princeton.edu