Definitions

1. noun

A long, whip-like appendage or structure, especially one that functions as a locomotory organ in certain single-celled organisms, such as bacteria.

“The flagella of the bacteria allowed it to move efficiently through the water.”

2. noun

One of the whip-like appendages, often occurring in pairs, that are used for swimming in certain unicellular organisms, such as the protist Paramecium.

“The flagella of the Paramecium are used to propel it forward in a watery environment.”

3. noun

A flagellum, especially one found in a fossil or a microscope slide.

“The paleontologist studied the flagella of ancient organisms in an effort to understand their evolutionary history.”