univalve

American  

[yoo-nuh-valv] / ˈyu nəˌvælv /

adjective

1. having one valve.

2. (of a shell) composed of a single valve or piece.

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noun

1. a univalve mollusk or its shell.

univalve British  

/ ˈjuːnɪˌvælv /

adjective

1. relating to, designating, or possessing a mollusc shell that consists of a single piece (valve)

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noun

1. a gastropod mollusc or its shell

univalve Scientific  

/ yo̅o̅′nĭ-vălv′ /

1. A gastropod, especially one with a single shell, such as a snail, cone, whelk, abalone, or limpet. Univalves belong to the subclass Prosobranchia. Their shells are usually spiral and can hold the whole animal inside.

2. Compare bivalve

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Etymology

Origin of univalve

First recorded in 1655–65; uni- + valve

Example Sentences

He obtained from it many shells of marine genera, Pectunculus, Arca, Cardita, Trochus, and others, both univalve and bivalve, all of recent Mediterranean species.

From Principles of Geology or, The Modern Changes of the Earth and its Inhabitants Considered as Illustrative of Geology by Lyell, Charles, Sir

On our way out, seawards, I came upon an immense univalve shell in about three or four feet of water.

From In Touch with Nature Tales and Sketches from the Life by Stables, Gordon

Fossil wood with Teredo antenautæ is also met with, and pyritous casts of univalve and bivalve shells.

From Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology by Various

Cochleate: spirally twisted like a screw or a univalve shell.

From Explanation of Terms Used in Entomology by Smith, John. B.

There appear to be three varieties, spiral, univalve, and bivalve.

From The World and Its People: Book VII Views in Africa by Badlam, Anna B.