Hypertext Webster Gateway: "reducer"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Reducer \Re*duc"er\, n.
1. (Mach.)
(a) A contrivance for reducing the dimensions of one part
so as to fit it to another, as a reducing coupling, or
a device for holding a drilling a chuck.
(b) A reducing motion.
(c) A reducing valve.
(d) A hydraulic device for reducing pressure and hence
increasing movement, used to transmit the load from
the hydraulic support of the lower shackle to the
lever weighing apparatus in some kinds of heavy
testing machines.
2. (Photog.) A reducing agent, either a developer or an agent
for reducing density.
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Reducer \Re*du"cer\ (-s?r), n.
One who, or that which, reduces.
From WordNet (r) 1.7 (wn)
reducer
n 1: a substance capable of bringing about the reduction of
another substance as it itself is oxidized; used in
photography to lessen the density of a negative or print
by oxidizing some of the slackened silver [syn: {reducing
agent}, {reductant}]
2: pipefitting that joins two pipes of different diameter
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