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Synonyms

lab

1 American  
[lab] / læb /

noun

  1. laboratory.

Lab 2 American  
[lab] / læb /

noun

  1. Informal. Labrador retriever.

LAB 3 American  
Or lab

abbreviation

Slang.

  1. life’s a bitch (used to acknowledge, often dismissively, a difficult or unfair circumstance).

lab. 4 American  

abbreviation

  1. labor.

  2. laboratory.

  3. laborer.

Lab. 5 American  

abbreviation

  1. Laborite.

  2. Labrador.

Lab. 1 British  

abbreviation

  1. politics Labour

  2. Labrador

"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
lab 2 British  
/ læb /

noun

  1. short for laboratory

  2. short for Labrador retriever

"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
lab. 3 British  

abbreviation

  1. laboratory

  2. labour

"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 lab1

By shortening

Origin of Lab2

By shortening

Origin of LAB3

From its use in digital communications

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.

Perplexity ruled out infection, based on my recent lab results.

From The Wall Street Journal • Apr. 4, 2026

As the lab technician prepared my vials, I told him, “I’m going to upload my blood work to AI!”

From The Wall Street Journal • Apr. 4, 2026

In the UK, in 2023, more than 50,000 patients had IVF cycles - where eggs are fertilised in a lab and the embryo is then placed in the woman's uterus.

From BBC • Apr. 3, 2026

New findings from his lab show that the genome's 3D organization is not fixed.

From Science Daily • Mar. 31, 2026

In a basement lab at the University of Washington in Seattle, Linda Noson was the first to notice.

From "Mountain of Fire" by Rebecca E. F. Barone

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.