lac 音标拼音: [l'æk]
n . 紫胶,十万,十万卢比,许多
紫胶,十万,十万卢比,许多
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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