Hirudinea
Definition
Noun: 1. A class of annelid worms: Hirudinea is the taxonomic class comprising the leeches. These are segmented worms characterized by having a sucker at each end of their body, being typically hermaphroditic, and living in aquatic, terrestrial, or parasitic habitats.
Usage
- The class Hirudinea includes both blood-feeding parasitic species and predatory species.
- Scientists study the anticoagulants produced by members of the Hirudinea for medical applications.
- Not all annelids are leeches; the Hirudinea is a distinct class separate from earthworms (Oligochaeta).
Advanced Usage
- In taxonomic context: The term is used formally in biological classification. For example: "The phylum Annelida is divided into several classes, including Polychaeta, Oligochaeta, and Hirudinea."
Variants and Related Words
- Hirudinean (noun/adjective): A member of the Hirudinea class; relating to leeches.
- The hirudinean specimen was collected from the freshwater pond.
- Leech (noun): The common name for an organism belonging to the class Hirudinea.
Synonyms
- Leeches (This is the common name for the group, not a scientific synonym).
Different Meanings
The word "Hirudinea" has a single, specific meaning in biological taxonomy and does not have other common definitions.
Noun
-
hermaphroditic aquatic or terrestrial or parasitic annelids
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