[after French surcharbonné (1806 in the passage translated in quot. 1807)] now rare
ΚΠ
1807 Jrnl. Nat. Philos. July 186 (heading) Supercarburetted cast iron.
1922 Brit. Patent 167,765 2/1 When the pistons uncover in their turn the ports 19 the supercarburetted gas enters the cylinder and mixes with the pure air.