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  1. Leech - Wikipedia

    Leeches are segmented parasitic or predatory worms that comprise the subclass Hirudinea within the phylum Annelida. They are closely related to the oligochaetes, which include the earthworm, and like …

  2. LEECH Definition & Meaning - Merriam-Webster

    The meaning of LEECH is any of numerous carnivorous or bloodsucking usually freshwater annelid worms (class Hirudinea) that have typically a flattened lanceolate segmented body with a sucker at …

  3. Leech | Annelid, Bloodsucking Parasite & Medicinal Uses | Britannica

    Nov 14, 2025 · Leech, (subclass Hirudinea), any of about 650 species of segmented worms (phylum Annelida) characterized by a small sucker, which contains the mouth, at the anterior end of the body …

  4. How to Remove a Leech: Steps, Treatment & More - Healthline

    Aug 20, 2021 · Learn how to safely and quickly remove a leech, as well as how to recognize a leech and when to seek immediate medical treatment.

  5. Leech - Types, Size, Anatomy, Habitat, Diet, Lifespan, & Life Cycle

    Nov 7, 2025 · Leeches are a group of typically parasitic annelids that constitute the subclass Hirudinea. Found in freshwater, marine, and terrestrial environments, leeches generally feed on the blood and …

  6. 9 Terrifying Leech Facts - Fact Animal

    There are more than 700 described species of leech, and they can be found almost everywhere. They also come in all colours and sizes, but one thing that really stands out about this group of worms is …

  7. Leech Animal Facts - A-Z Animals

    May 27, 2024 · The leech (Hirudinea) is a predator and blood-sucking parasite that is native to almost every continent. This aquatic worm is a member of the Annelida phylum, which means it’s related to …

  8. LEECH Definition & Meaning | Dictionary.com

    Leech definition: any bloodsucking or carnivorous aquatic or terrestrial worm of the class Hirudinea, certain freshwater species of which were formerly much used in medicine for bloodletting..

  9. Leech - New World Encyclopedia

    Leech is the common name for any of the annelids (segmented worms) comprising the subclass (or class) Hirudinea. They typically are characterized by a small sucker on the anterior (mouth) end of …

  10. 8 Unique Characteristics of Leeches - Wildlife Informer

    Leeches are worms and have no legs, so they can’t walk or run. However, these worms have a unique way of moving forward and swimming. Each end of a leech’s body has a sucker that helps move …