from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A resinous secretion of the lac insect deposited on trees and used in making shellac.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A resinous substance produced mainly on the banyan tree by the female of Coccus lacca, a scale-shaped insect.
- n. One hundred thousand (commonly used in Pakistan and India).
from the GNU version of the Collaborative International Dictionary of English
- n. One hundred thousand; also, a vaguely great number.
- n. 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.
from The Century Dictionary and Cyclopedia
- n. A Middle English form of lack.
- n. A resinous incrustation deposited on the twigs of various trees in India and southern Asia by the lac-insect, Carteria lacca.
- n. The sum of 100,000, usually of rupees.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. resinlike substance secreted by certain lac insects; used in e.g. varnishes and sealing wax
Now, an operon is a little segment of DN A in a bacteria which codes for a couple of genes, and genes code for proteins, and the proteins usually have related functions or function as a group, and one of them is called the lac operon which is used to, the proteins of which are necessary for the bacterium Escherichia coli to metabolize a sugar called lactose, which is a milk sugar.
This is a figure again taken from that biochemistry textbook by Voet and Voet discussing a system called the lac operon.
The females never escape and after impregnation their ovaries become filled with a red fluid which forms a valuable dye known as lac dye.
The roughly-prepared coating is imported in two forms, called lac-lake and lac-dye, which contain about 50 per cent of colouring matter, combined with more or less resin, and with earthy matters, consisting chiefly of carbonate and sulphate of lime and silica.
One of the inductive apparatus already described (1187, &c.) had a hemispherical cup of shell-lac introduced, which being in the interval between the inner bull and the lower hemisphere, nearly occupied the space there; consequently when the apparatus was charged, the lac was the dielectric or insulating medium through which the induction took place in that part.
The Rajah of Benares receives from the English government an annual pension of one lac, that is, 100,000 rupees (10,000 pounds).
In the account given by the Begum, a lac, which is for Mr. Hastings's entertainment, is entered in a suspicious neighborhood; for there is there entered a lac of rupees paid for the subahdarry sunnuds to the Mogul through the Rajah Shitab Roy.
In fact, no ingredient in food that starts with "lac" will ever be a problem to those with lactose intolerance.
In fact, there is no lactose in any of the "lac" additives found in ingredients lists.
The term "lac" is the same as "lakh" which means 100,000 and is indicative of the countless hosts of insects which are the source from which this gum is obtained.