a bluish translucent magnetic liquid obtained by compressing gaseous oxygen and then cooling it below its boiling point; used as an oxidizer in rocket propellants
wet spongy ground of decomposing vegetation; has poorer drainage than a swamp; soil is unfit for cultivation but can be cut and dried and used for fuel
emptied or exhausted of (as by drawing off e.g. water or other liquid); "a drained marsh"; "a drained tank"; "a drained and apathetic old man...not caring any longer about anything"
deficient in originality or creativity; lacking powers of invention; "a sterile ideology lacking in originality"; "unimaginative development of a musical theme"; "uninspired writing"
the act of reconnoitring (especially to gain information about an enemy or potential enemy); "an exchange of fire occurred on a reconnaissance mission"