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Webster 1913 Edition

Noun.

[L.

causticum

(sc.

medicamentum

). See

Adj.

]

Any substance or means which, applied to animal or other organic tissue, burns, corrodes, or destroys it by chemical action; an escharotic.

(Optics)

A caustic curve or caustic surface.

See also: caustic

càustic m ‎(feminine càustica, masculine plural càustics, feminine plural càustiques)