Webster's Revised Unabridged Dictionary · 1913

Reducing

Reducing (r?*d?"s?ng) , adjective and noun

a & n. from Reduce.
Collocations (3)
Reducing furnace (Metallurgy) , a furnace for reducing ores.
Reducing pipe fitting , a pipe fitting, as a coupling, an elbow, a tee, etc., for connecting a large pipe with a smaller one.
Reducing valve , a device for automatically maintaining a diminished pressure of steam, air, gas, etc., in a pipe, or other receiver, which is fed from a boiler or pipe in which the pressure is higher than is desired in the receiver.