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Mor*dac"i*ty (?), n. [L.
mordacitas: cf. F. mordacité. See
Mordacious.] The quality of being mordacious; biting
severity, or sarcastic quality. Bacon.

Mor"dant (?), a. [F., p. pr. of
mordere to bite; L. mordere. See Morsel.]
1. Biting; caustic; sarcastic; keen;
severe.

2. (Dyeing & Calico Printing) Serving
to fix colors.

Mor"dant, n. [F., originally, biting.]
1. Any corroding substance used in
etching.

2. (Dyeing & Calico Printing) Any
substance, as alum or copperas, which, having a twofold attraction
for organic fibers and coloring matter, serves as a bond of union,
and thus gives fixity to, or bites in, the dyes.

3. (Gilding) Any sticky matter by
which the gold leaf is made to adhere.

Mor"dant (?), v.


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