flagellum

[ fluh-jel-uh m ]
/ fləˈdʒɛl əm /

noun, plural fla·gel·la [fluh-jel-uh] /fləˈdʒɛl ə/, fla·gel·lums.

Biology. a long, lashlike appendage serving as an organ of locomotion in protozoa, sperm cells, etc.
Botany. a runner.
Also called clavola. Entomology. (in an antenna) the whiplike portion above the basal joints.
a whip or lash.

Origin of flagellum

1800–10; < Latin: whip, lash, diminutive of flagrum a whip, scourge
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for flagellum

British Dictionary definitions for flagellum

flagellum

/ (fləˈdʒɛləm) /

noun plural -la (-lə) or -lums

biology a long whiplike outgrowth from a cell that acts as an organ of locomotion: occurs in some protozoans, gametes, spores, etc
botany a long thin supple shoot or runner
zoology the terminal whiplike part of an arthropod's appendage, esp of the antenna of many insects

Derived Forms

flagellar, adjective

Word Origin for flagellum

C19: from Latin: a little whip, from flagrum a whip, lash
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

Medicine definitions for flagellum

flagellum

[ flə-jĕləm ]

n. pl. fla•gel•la (-jĕlə)

A threadlike appendage, especially a whiplike extension of certain cells or organisms that functions as an organ of locomotion.

Related forms

fla•gellar (-jĕlər) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for flagellum

flagellum

[ flə-jĕləm ]

Plural flagella

A slender whiplike part extending from some single-celled organisms, such as the dinoflagellates, that moves rapidly back and forth to impart movement to the organism.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.