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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.

One math professor, Misha Rudnev at the University of Bristol, told New Scientist: “This is a problem that I didn’t expect to see solved in my lifetime.”

From Slate • Jun. 22, 2026

"This spring highlights both the natural variability of the UK's weather and the longer-term warming we are observing," Met Office Scientist Dr Emily Carlisle said.

From BBC • Jun. 1, 2026

The discovery was made by ten students enrolled in the university's "Field Course in Astrophysics," taught by Professor Alex Ji, deputy Project Scientist for SDSS-V, along with graduate teaching assistants Hillary Andales and Pierre Thibodeaux.

From Science Daily • Apr. 4, 2026

Scientist Alexandra, 32, refuses to download Max "out of contrariness" to its heavy-handed promotion.

From Barron's • Mar. 23, 2026

During recess, when she catches me examining a flower I’d never seen before up close, and I explain I’m counting the stamens, she starts calling me Virginia the Esteemed Scientist.

From "The Queen of Water" by Laura Resau

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