proprietarymixture
nounUK /prəˈpraɪ.ə.tər.i ˈmɪks.tʃə/
US /prəˈpraɪ.ə.ter.i ˈmɪks.tʃɚ/
A special mix that belongs to one company and is kept secret.
The soda's proprietary mixture of flavors is a closely guarded secret.
OTHER MEANINGS
2. A combination of ingredients owned by a company and protected by law.
The cough syrup uses a proprietary mixture that no other company can copy.
3. A blend of substances whose exact contents are not shared with the public.
The cleaning product's proprietary mixture is listed only as 'surfactants' on the label.
4. A unique compound developed and controlled by a single business.
Their proprietary mixture gives the paint its quick-drying quality.