# aberrant

/æˈbɛɹənt/ (US) · /ɐbˈɛɹənt/ (UK) · CEFR C1 · Adjective

Source: https://englishreference.com/word/aberrant
Updated: 2026-05-29

## Definition

describing something that is very different from what is normal or expected. In science, it often refers to a physical trait that is not typical for a species.

For teachers: deviating from what is normal, usual, or expected. In a biological context, it describes a physical or genetic trait that is atypical for a species or population.

## Examples

- The plant has an aberrant shape compared to its neighbors.
- Scientists noted the aberrant behavior of the birds during the unusually cold winter months.
- The discovery of an aberrant chromosome in the sample suggested a genetic mutation that had not been previously documented in the species.

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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.