# abdominalia

CEFR C2 · Noun

Source: https://englishreference.com/word/abdominalia
Updated: 2026-06-22

## Definition

the parts of an animal's body that are in the middle, between the chest and the tail. It is a very technical word used mostly in biology to talk about insects or spiders.

For teachers: the posterior segments of an arthropod's body, located between the thorax and the tail. Often used in biological contexts to describe the segmented structure of insects, arachnids, or crustaceans.

## Examples

- The spider's abdominalia are covered in fine, hairy patterns.
- In many insect species, the abdominalia contain the primary reproductive organs and the digestive tract.
- The researcher noted that the specific arrangement of the abdominalia in this particular species of millipede provides a unique defense mechanism against predators.

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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.