01 a. Acting directly, as one part upon another, without the intervention of other working parts.
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1.
Acting directly, as one part upon another, without the intervention of other working parts.(Mach.)
Phrases & compounds
Direct-acting steam engine —
one in which motion is transmitted to the crank without the intervention of a beam or lever; -- also called direct-action steam engine.
Direct-acting steam pump —
one in which the steam piston rod is directly connected with the pump rod; -- also called direct-action steam pump.