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The Collaborative International Dictionary of English v.0.48 (gcide)

Ulcer \Ul"cer\, n. [F. ulc[`e]re, L. ulcus, gen. ulceris, akin
to Gr. ?.]
1. (Med.) A solution of continuity in any of the soft parts
of the body, discharging purulent matter, found on a
surface, especially one of the natural surfaces of the
body, and originating generally in a constitutional
disorder; a sore discharging pus. It is distinguished from
an abscess, which has its beginning, at least, in the
depth of the tissues.
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2. Fig.: Anything that festers and corrupts like an open
sore; a vice in character.
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{Cold ulcer} (Med.), an ulcer on a finger or toe, due to
deficient circulation and nutrition. In such cases the
extremities are cold.
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Ulcer \Ul"cer\, v. t.
To ulcerate. [R.] --Fuller.
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