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motility

American  
[moh-til-i-tee] / moʊˈtɪl ɪ ti /

noun

  1. Biology. the ability to move spontaneously, or the rate or degree of such movement.

    Advanced zinc deficiency can impair the motility and number of sperm.


Other Word Forms

Etymology

Origin of motility

First recorded in 1800–10; from Latin mōt-, stem of movēre “to move” + -ility ( def. )

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Explanation

In biology, motility is the ability of organisms and fluid to move or get around. A microbiologist might test and compare the motility of various single-celled organisms. An easy way to remember that motility means the ability to move without help is the mot- at the root of the word. It's the same root that's found in "motor," which is, of course, the engine that drives a car. If you've got good motility then your motor is working. After a car accident, an athlete's friends are understandably concerned about her motility. Motility is something you tend to take for granted — until you sprain an ankle.

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Vocabulary lists containing motility

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.

Diamond said that in the company’s clinical research on men with male-factor infertility, findings showed its male prenatals significantly boosted sperm motility, or how well the sperm moves.

From The Wall Street Journal • Apr. 7, 2026

But the enteric nervous system, which governs gut motility through a dense network of neurons that neuroscientists sometimes call the “second brain,” is not built to sustain that kind of chronic, pharmacological override.

From Slate • Mar. 22, 2026

Disrupting sympathetic nerve signaling improved motility issues but did not reduce pain.

From Science Daily • Mar. 17, 2026

He also has reduced eye motility, visual function and substantial field loss.

From BBC • Nov. 30, 2025

All their aunts have received Communications, and there they sit, with proof of the motility of consciousness at their fingertips, and the making of a new science.

From "The Lives of a Cell" by Lewis Thomas

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