Definition

1. Noun:
   • A class of mollusks: "Class Bivalvia" is the scientific name for a major class of mollusks characterized by having a shell consisting of two hinged parts (valves). This class includes familiar aquatic animals such as oysters, clams, scallops, and mussels.

Usage Examples

• Noun:
  • Marine biologists study the diverse species within the class Bivalvia.
  • Oysters, belonging to the class Bivalvia, are important for both ecology and cuisine.

Advanced Usage

• In taxonomic context: Used in scientific literature to refer to this specific taxonomic rank.
  • The fossil record shows that the class Bivalvia has existed for over 500 million years.

Variants and Related Words

• Bivalve (n): The common term for any member of the class Bivalvia.
  • Clams are a type of bivalve.
• Bivalvia: Often used synonymously with "class Bivalvia" in scientific contexts.
• Pelecypoda: An older, synonymous name for this class.

Synonyms

• Lamellibranchia: Another former class name for these organisms, referring to their gill structure.
• Pelecypods: A term derived from the older class name Pelecypoda.

Related Phrases

• Bivalve mollusk: A descriptive phrase combining the common and scientific terms.
  • The bay is populated by various bivalve mollusks.

Noun

1. oysters; clams; scallops; mussels