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lac    音標拼音: [l'æk]
n. 紫膠,十萬,十萬盧比,許多

紫膠,十萬,十萬盧比,許多

lac
n 1: resinlike substance secreted by certain lac insects; used
in e.g. varnishes and sealing wax

Lac \Lac\ (l[a^]k), Lakh \Lakh\ (l[aum]k), n. [Hind. lak,
l[=a]kh, l[=a]ksh, Skr. laksha a mark, sign, lakh.]
One hundred thousand; also, a vaguely great number; as, a lac
of rupees. [Written also {lack}.] [East Indies]
[1913 Webster]


Lac \Lac\, n. [Per. lak; akin to Skr. l[=a]ksh[=a]: cf. F.
lague, It. & NL. lacca. Cf. {Lake} a color, {Lacquer},
{Litmus}.]
A resinous substance produced mainly on the banyan tree, but
to some extent on other trees, by the {Laccifer lacca}
(formerly {Coccus lacca}), a scale-shaped insect, the female
of which fixes herself on the bark, and exudes from the
margin of her body this resinous substance.
[1913 Webster]

Note: {Stick-lac} is the substance in its natural state,
incrusting small twigs. When broken off, and the
coloring matter partly removed, the granular residuum
is called {seed-lac}. When melted, and reduced to a
thin crust, it is called {shell-lac} or {shellac}. Lac
is an important ingredient in sealing wax, dyes,
varnishes, and lacquers.
[1913 Webster]

{Ceylon lac}, a resinous exudation of the tree {Croton
lacciferum}, resembling lac.

{Lac dye}, a scarlet dye obtained from stick-lac.

{Lac lake}, the coloring matter of lac dye when precipitated
from its solutions by alum.

{Mexican lac}, an exudation of the tree {Croton Draco}.
[1913 Webster]



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