# acanthocephalous

CEFR C2 · Adjective

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

## Definition

having a head that looks like a thorn or a spiny plant. This describes a specific type of animal that has a spiny covering on its head.

For teachers: possessing a head that resembles a thorn or is covered in spines. Refers to a specific group of parasitic worms known as acanthocephalans.

## Examples

- The acanthocephalous worm has a spiny head.
- Biologists identified the specimen as an acanthocephalous parasite based on its distinctive spiny proboscis.
- The acanthocephalous structure of the parasite's head allows it to anchor itself firmly within the intestinal tract of its host, facilitating nutrient absorption and long-term survival.

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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.