·adj Operating in any way.
II. Acting ·p.pr. & ·vb.n. of Act.
III. Acting ·adj Doing duty for another; officiating; as, an acting superintendent.
·adj Acting directly, as one part upon another, without the intervention of other working parts. ...
Webster's Dictionary of the English Language
·adj Acting or operating in two directions or with both motions; producing a twofold result; as, a d...
·adj Acting of or by one's self or by itself; — said especially of a machine or mechanism which is ...
·adj Having simplicity of action; especially (Mach.), acting or exerting force during strokes in one...
When a commissioned officer is invalided, his vacancy is filled up pending the pleasure of the admir...
The Sailor's Word-Book
A steam engine in which the connecting rod is led at once from the head of the piston to the crank, ...
One in which the steam acts upon the piston against a vacuum, both in the upward and downward moveme...