astacidae

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Definition

Noun 1. A taxonomic family of freshwater crustaceans: Astacidae refers to a family of decapod crustaceans commonly known as crayfish or crawfish, typically found in freshwater habitats like streams and rivers.

Usage Examples
  • The Astacidae family includes many species native to the Northern Hemisphere.
  • Biologists study the Astacidae to understand freshwater ecosystem health.
  • This particular crayfish belongs to the family Astacidae.
Advanced Usage
  • In scientific classification, Astacidae is used to specify a particular clade within the infraorder Astacidea, distinguishing it from other crayfish families like Cambaridae or Parastacidae.
    • The research paper focused on the phylogenetic relationships within the Astacidae.
Variants and Related Words
  • Astacid (noun/adjective): A member of the family Astacidae; pertaining to the Astacidae.
    • The astacid population has declined in recent years.
  • Crayfish (noun): The common name for freshwater crustaceans in the families Astacidae, Cambaridae, and Parastacidae.
  • Crawfish (noun): A regional variant of "crayfish."
Synonyms
  • Crayfish family (informal, non-taxonomic)
  • Freshwater lobsters (informal, though true lobsters are marine)
Notes on Different Meanings

This word has a single, specific meaning in biological taxonomy. It is not used in general language or with other definitions.

Noun
  1. crayfish

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