bipropellant

(bī′prō pelənt)

noun

a propellant system for rockets consisting of a fuel and an oxidizer kept in separate tanks, and brought together only in the combustion chamber

See bipropellant in American Heritage Dictionary 4

noun
A two-component rocket propellant, such as liquid hydrogen and liquid oxygen, fed separately to the combustion chamber as fuel and oxidizer. Also called dipropellant.
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