1325-75;Middle Englishsubsidie < Anglo-French < Latinsubsidium auxiliary force, reserve, help, equivalent to sub-sub- + sid-, combining form of sedēre to sit1 + -ium-ium
antisubsidy, noun, plural antisubsidies.
nonsubsidy, noun, plural nonsubsidies.
1. Subsidy, subvention are both grants of money, especially governmental, to aid private undertakings. A subsidy is usually given to promote commercial enterprise: a subsidy to manufacturers during a war. A subvention is usually a grant to stimulate enterprises connected with science and the arts: a subvention to a research chemist by a major company.
late 14c., from Anglo-Fr. subsidie, from O.Fr. subside "help, aid, contribution," from L. subsidium "help, aid, assistance, (military) reinforcements," from sub "behind, near" + sedere "to sit" (see sedentary). Subsidize is from 1795. Originally of nations, "to buy neutrality or alliance." Meaning "to support by grants of money" is from 1828.