[Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/dictionaries/school/w/crustacean.html)

[home](https://md.mova.elamur.ai/free/en/) / [dictionaries](https://md.mova.elamur.ai/free/en/dictionaries/) / [The school dictionary](https://md.mova.elamur.ai/free/en/dictionaries/school/) / crustacean

[← C](https://md.mova.elamur.ai/free/en/dictionaries/school/C/)

# crustacean

«crustacean» in Mova's school dictionary: **an animal with a hard outer shell, jointed legs and no…** — its meaning for a pupil, its sense in the lessons and examples, with 2 sentences of Mova's corpora that use it.

### part of speech

noun (a crustacean, crustaceans); adjective (crustacean)

### meaning for a pupil

A crustacean is an animal with a hard outer shell, jointed legs and no backbone, which usually lives in water, such as a crab, lobster, shrimp, prawn or crayfish. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/crustacean/#m1)

### sense in the lessons

In science lessons on animal groups, crustaceans are invertebrates and arthropods, like insects and spiders; woodlice are crustaceans that live on land. They grow by shedding their shell (moulting). In food safety some people are allergic to crustaceans (shellfish). Phrases: crustaceans such as crabs, a shellfish allergy.

### examples

- A crab is a crustacean. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/crustacean/#x1)
- Lobsters, shrimps and prawns are all crustaceans. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/crustacean/#x2)
- Woodlice are crustaceans that live on land. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/crustacean/#x3)
- A crustacean has a hard shell and jointed legs. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/crustacean/#x4)
- Crustaceans grow by shedding their old shells. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/crustacean/#x5)
- We found small crustaceans in the rock pool. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/crustacean/#x6)
- Some people are allergic to crustaceans. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/crustacean/#x7)

### note

Countable: a crustacean, crustaceans. Pronounced krus-TAY-shun. Trap: woodlice are not insects; they are crustaceans. Shellfish include both crustaceans and molluscs (like mussels).

### In the corpora

- [Woodlice need damp places and hide under logs and stones; they are crustaceans, related to crabs and shrimps, not insects.](https://md.mova.elamur.ai/free/en/corpora/school/biology/220-spiders-and-other-minibeasts-under-logs-and-stones/11/)
- [Woodlice are not insects; they are crustaceans, relatives of crabs, with fourteen legs.](https://md.mova.elamur.ai/free/en/corpora/school/world/29-classifying-unusual-animals/11/)

### Trees and pragmatics

[Every meaning and example of «crustacean» parsed by Mova](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/crustacean/), each sentence with its dependency tree and frames.