# biologist

/baɪˈɑɫədʒɪst/ (US) · /baɪˈɒlədʒˌɪst/ (UK) · CEFR B1 · Noun

Source: https://englishreference.com/word/biologist
Updated: 2026-05-06

## Definition

a scientist who studies living things. This includes everything from tiny bacteria to large animals and how they interact with their environment.

For teachers: a scientist who specialises in the study of living organisms and their vital processes. The term encompasses specialists in various sub-disciplines such as genetics, ecology, and microbiology.

## Examples

- The biologist is studying the behavior of wolves.
- A marine biologist spent three months on a research vessel to track the migration patterns of humpback whales.
- By analyzing DNA samples from various soil layers, the biologist was able to reconstruct the ancient ecosystem and identify species that had been extinct for millennia.

---

From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.