- Biol. a whiplike part or process of some cells, esp. of certain bacteria, protozoans, etc., that is an organ of locomotion or that produces a current in the surrounding fluid
- Bot. a threadlike shoot or runner
- Zool. the terminal, lashlike portion of the antenna in many insects
Origin of flagellumL, a whip: see flagellate
- Biology A long, threadlike appendage, especially a whiplike extension of certain cells or unicellular organisms that functions as an organ of locomotion.
- A small whip; a scourge.
Origin of flagellumLatin, diminutive of flagrum, whip.
on a euglena
(plural flagella or flagellums)