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biologist

American  
[bahy-ol-uh-jist] / baɪˈɒl ə dʒɪst /

noun

  1. a specialist in biology.


Etymology

Origin of biologist

First recorded in 1805–15; biolog(y) + -ist

Explanation

A biologist is a scientist who focuses on living organisms, including plants and animals. Wildlife biologists might specialize in studying African elephants. Biologists study a wide variety of life forms, from single-celled organisms to primates, and conduct research in many different areas, from the spreading of pathogens to the details of evolution. A marine biologist studies sea creatures and a microbiologist might study algae or bacteria. The word biologist is rooted in the Greek bios, or "life."

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Vocabulary lists containing biologist

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.

Led by evolutionary biologist Jianzhi Zhang, the research suggests that helpful mutations may be far more common than long standing theory predicts.

From Science Daily • May 29, 2026

In Rio de Janeiro, biologist Mário Moscatelli, who’s spent decades restoring mangroves in the city’s gorgeous Rodrigo de Freitas lagoon, is now speaking on behalf of the lagoon’s capybaras.

From Slate • May 27, 2026

Marine biologist Erica Chapman, who is the TF volunteer co-ordinator, said it let everyone play their part in protecting river health.

From BBC • May 26, 2026

What does it mean to be a mathematical biologist?

From The Wall Street Journal • May 7, 2026

He had thought he might end up as biologist or a mathematician.

From "Outliers" by Malcolm Gladwell

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