Dictionary.com

bulb

[ buhlb ]
/ bʌlb /
Save This Word!

noun
QUIZ
ARE YOU A TRUE BLUE CHAMPION OF THESE "BLUE" SYNONYMS?
We could talk until we're blue in the face about this quiz on words for the color "blue," but we think you should take the quiz and find out if you're a whiz at these colorful terms.
Question 1 of 8
Which of the following words describes “sky blue”?
Meet Grammar CoachWrite or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing
Meet Grammar CoachImprove Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help

Origin of bulb

1560–70; <Latin bulbus<Greek bolbós onion, bulbous plant

OTHER WORDS FROM bulb

bulbed, adjectivebulbless, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use bulb in a sentence

British Dictionary definitions for bulb

bulb
/ (bʌlb) /

noun
a rounded organ of vegetative reproduction in plants such as the tulip and onion: a flattened stem bearing a central shoot surrounded by fleshy nutritive inner leaves and thin brown outer leavesCompare corm
a plant, such as a hyacinth or daffodil, that grows from a bulb
a rounded part of an instrument such as a syringe or thermometer
anatomy a rounded expansion of a cylindrical organ or part, such as the medulla oblongata
Also called: bulbous bow a bulbous protuberance at the forefoot of a ship to reduce turbulence

Word Origin for bulb

C16: from Latin bulbus, from Greek bolbos onion
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

Medical definitions for bulb

bulb
[ bŭlb ]

n.
A globular or fusiform anatomical structure or enlargement.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for bulb

bulb
[ bŭlb ]

A rounded underground storage organ that contains the shoot of a new plant. A bulb consists of a short stem surrounded by fleshy scales (modified leaves) that store nourishment for the new plant. Tulips, lilies, and onions grow from bulbs. Compare corm rhizome runner tuber.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
FEEDBACK