multivalve adjective & noun. ['mʌltɪvalv] M18.
[from MULTI- + VALVE noun.]
A. adjective.
1. Biology. Esp. of a shell or shelled animal: having several or many valves. M18.

2. Electronics. Having several or many thermionic valves. E20.

3. Of an internal-combustion engine: having more than two valves per cylinder, typically four (two inlet and two exhaust). L20.
b. noun. A multivalve shell; an animal having such a shell, as a chiton, an acorn-shell. M18.

■ multivalved,

■ multi'valvular adjectives = MULTIVALVE adjective 1 M18.

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