univalve

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

noun a class of mollusks typically having a one-piece coiled shell and flattened muscular foot with a head bearing stalked eyes
adjective used of mollusks, especially gastropods, as snails etc.

Originated 1655–65 from uni- (“one”) + valve.

There are four British species of these queer little univalves (which are so named from the little spring door with which the entrance of the shell is furnished); Clausilia laminata, Rolphii, rugosa and biplicata. — The blue scarab, R. Austin (Richard Austin) Freeman

gastropod

Type a word, a sentence, a book title, or a link to an English article. WordNet and the Classics answer.

Try

A library of classics · a vault of words · instant etymology & meaning

From: —

Output

Worksheet Type (multi-select)

Scope

Difficulty

Max questions

0 words Min 50 words / Max 2,000 words