# acanthocephalan

CEFR C2 · Noun

Source: https://englishreference.com/word/acanthocephalan
Updated: 2026-05-26

## Definition

a type of parasitic worm that lives inside the bodies of animals like birds and fish. It has a hard shell and a long neck.

For teachers: a member of a group of parasitic worms belonging to the phylum Acanthocephala. Characterised by a spiny proboscis and a tough, spiny outer covering.

## Examples

- The acanthocephalan lives inside the gut of its host.
- Researchers discovered a rare acanthocephalan in the digestive system of a local waterfowl during a wildlife survey.
- The evolutionary success of the acanthocephalan is attributed to its specialized attachment mechanism, which allows it to remain firmly anchored within the intestinal tract of its vertebrate host.

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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.