Definition

1. Noun:
   • A taxonomic class of marine mollusks: "Class Polyplacophora" is the scientific name for a small, distinct class of marine mollusks commonly known as chitons. These animals are characterized by their unique shell structure, which consists of eight overlapping dorsal plates.

Usage Examples

• Noun:
  • The class Polyplacophora includes species that are well-adapted to life on rocky intertidal shores.
  • Biologists study the class Polyplacophora to understand the evolution of molluscan body plans.

Advanced Usage

• In taxonomic hierarchy: The term is used formally in biological classification to group all chiton species under this single class.
  • The phylum Mollusca is divided into several classes, including Gastropoda, Bivalvia, and Polyplacophora.

Variants and Related Words

• Polyplacophoran (n): An individual mollusk belonging to the class Polyplacophora; a chiton.
  • The polyplacophoran was firmly attached to the rock.
• Chiton (n): The common name for any member of the class Polyplacophora.
  • We found a chiton under the seaweed.

Synonyms

• Chitons: The common name for the organisms within this class.
• Sea cradles: A less common vernacular name for chitons.

Related Phrases

• Member of the Polyplacophora: A phrase used to specify an organism's taxonomic classification.
  • This specimen is a member of the Polyplacophora.

Related Idioms

(This is a precise scientific term; idioms are not typically associated with it.)

Noun

1. small class of marine mollusks comprising the chitons; sometimes considered an order of the subclass Amphineura