pro ‧ pri ‧ e ‧ ta ‧ ry /prəˈpraɪət ə ri $ -teri/ BrE AmE adjective formal
[ Date: 1400-1500 ; Language: Late Latin ; Origin: proprietarius , from Latin proprietas ; ⇨ ↑ property ]
1 . especially British English a proprietary product is one that is sold under a ↑ trade name OPP generic :
a proprietary brand of insecticide
proprietary software products
2 . relating to who owns something:
They have proprietary rights to the data.
He has no proprietary interest in the farm (=he does not own any part of it) .
3 . proprietary behaviour makes it seem that you think you own something or someone