Skip to content
Plants & CreaturesGreekEnglish

Isopod

/ˈaɪsəpɒd/noun

A flattened crustacean whose legs are all much alike, including woodlice and sea slaters.

The Greek roots

ἴσος
ísos
equal, same
+
πούς
poús
foot

Literally: equal-footed

The story of the word

The name is a contrast, not a description: unlike a lobster, which converts its front legs into claws, an isopod keeps every pair looking the same. Woodlice are the group's one real success on land, breathing through modified gills that still need damp. At the other end sits Bathynomus giganteus, a deep-sea isopod the size of a cat, which is a woodlouse in every structural sense.

How it travelled
Ancient Greek → New Latin → English
First recorded
1830s

Same family

decapodisoscelesisobarpodiumamphipod

In a sentence

Lift any damp log in the garden and a dozen isopods scatter.

Built on the same root

More from Plants & Creatures