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scientist

American  
[sahy-uhn-tist] / ˈsaɪ ən tɪst /

noun

scientists plural
  1. an expert in science, especially one of the physical or natural sciences.


Scientist 1 British  
/ ˈsaɪəntɪst /

noun

  1. Christian Science Christ as supreme spiritual healer

  2. short for Christian Scientist See Christian Scientist

"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

scientist 2 British  
/ ˈsaɪəntɪst /

noun

  1. a person who studies or practises any of the sciences or who uses scientific methods

"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

Other Word Forms

Derived Forms

Inflected Forms

Nouns

Etymology

Origin of scientist

1825–35; < Latin scient ( ia ) science + -ist

Explanation

A scientist is a person with some kind of knowledge or expertise in any of the sciences, like biology or chemistry. See that guy in the white lab coat wearing pocket protectors and experimenting with chemicals? He’s definitely a scientist. The word science comes from the Latin, scientia, which means "knowledge." The sciences are branches of knowledge about the world that derive from repeated experiments. A scientist is any person with an interest in the sciences, from amateurs to professionals. A curious high school student interested in seeing what happens when he slips vinegar into his best friend's can of soda could be considered a kind of scientist!

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Vocabulary lists containing scientist

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.

"As the first project to create Bose-Einstein condensates in orbit, we're demonstrating that we can make quantum technology work reliably in space," said Ethan Elliott, deputy project scientist for Cold Atom Lab at JPL.

From Science Daily • Jun. 23, 2026

Jumper, who is a senior research scientist and Nobel Prize winner, is joining AI start-up Anthropic.

From Barron's • Jun. 22, 2026

She introduces readers to a passionate, driven and irascible scientist through the story of his life’s work.

From The Wall Street Journal • Jun. 21, 2026

Insect scientist Connor Butler's tours combine nature walks with opportunities for LGBTQ+ people to meet away from busy bars and noisy Pride parades.

From BBC • Jun. 20, 2026

Depending on who you talked to, he was an inventor, a scientist, a soldier, or even a lunatic—or maybe all of the above.

From "The Woman All Spies Fear" by Amy Butler Greenfield

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