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lac

1 American  
[lak] / læk /

noun

  1. a resinous substance deposited on the twigs of various trees in southern Asia by the female of the lac insect: used in the manufacture of varnishes, sealing wax, etc., and in the production of a red coloring matter.

lac 2 American  
[lahk] / lɑk /

noun

  1. lakh.

lac 3 American  
[lak] / læk /

noun

  1. (in prescriptions) milk.

LAC 4 American  

  1. leading aircraftsman.

LAC 1 British  

abbreviation

  1. leading aircraftman

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
lac 2 British  
/ læk /

noun

  1. a resinous substance secreted by certain lac insects, used in the manufacture of shellac

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
lac 3 British  
/ lɑːk /

noun

  1. a variant spelling of lakh

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of lac1

First recorded in 1400–50; Middle English lacca, from Dutch lak or French lac, laque, from Old French lacce, lache, from Medieval Latin lac, lacca, from Arabic lakk, from Persian lak, from Hindi lākh, from Prakrit lākkhā, from Sanskrit lākṣā

Origin of lac3

From Latin

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The 80-seat cafe serves Vietnamese classics such as fish sauce wings and luc lac shaking beef along with fusion dishes, such as the fried chicken with pandan waffles.

From Seattle Times • May 4, 2024

Therefore it is ON by default whereas the lac operon is repressible and is OFF by default.

From Textbooks • Jun. 9, 2022

CAP binds to the operator sequence upstream of the promoter that initiates transcription of the lac operon.

From Textbooks • Jun. 9, 2022

Lactose acts as an inducer of the lac operon when glucose is absent.

From Textbooks • Jun. 9, 2022

Preserve books bound in calf by brushing over with thin lac varnish.

From Book Collecting: A Guide for Amateurs by Slater, J. Herbert (John Herbert)

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.