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

Spermaceti \Sper`ma*ce"ti\, n. [L. sperma sperm cetus,gen.
ceti, any large sea animal, a whale, Gr. ???. See {Sperm},
{Cetaceous}.]
A white waxy substance obtained from cavities in the head of
the sperm whale, and used making candles, oilments,
cosmetics, etc. It consists essentially of ethereal salts of
palmitic acid with ethal and other hydrocarbon bases. The
substance of spermaceti after the removal of certain
impurities is sometimes called cetin.
[1913 Webster]

{Spermaceti whale} (Zool.), the sperm whale.
[1913 Webster]


cachalot \cach"a*lot\, n. [F. cachalot.] (Zool.)
The sperm whale ({Physeter macrocephalus}). It has in the top
of its head a large cavity, containing an oily fluid, which,
after death, concretes into a whitish crystalline substance
called {spermaceti}. See {Sperm whale}.
[1913 Webster]

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