Definition

1. Noun:

   • A type of worm with a segmented body: An annelid is any worm belonging to the phylum Annelida, characterized by a long, soft, cylindrical body divided into many similar ring-like segments, both internally and externally. Common examples include earthworms and leeches.

2. Adjective:

   • Relating to annelid worms: Describes something that belongs to, is characteristic of, or is related to the phylum Annelida.

Usage Examples

• Noun:

  • The common earthworm is a familiar example of an annelid.
  • Marine biologists study polychaetes, a class of marine annelids.

• Adjective:

  • The annelid body plan is highly segmented.
  • They observed the annelid characteristics under the microscope.

Advanced Usage

• Scientific Classification: The term is primarily used in biological and zoological contexts to classify and describe a major group of invertebrates.
  • The phylum Annelida includes three main classes: Oligochaeta (earthworms), Polychaeta (bristle worms), and Hirudinea (leeches).

Variants and Related Words

• Annelida (n): The scientific phylum name to which all annelids belong.
• Annelidan (adj/n): A less common variant with the same meaning as 'annelid'.

Synonyms

• Segmented worm: A descriptive synonym emphasizing the key anatomical feature.
• Ringed worm: Another descriptive synonym.

Antonyms

• There is no direct antonym, but it contrasts with worms from other phyla that are not segmented, such as:
  • Flatworm (phylum Platyhelminthes)
  • Roundworm (phylum Nematoda)

Adjective

1. relating to or belonging to or characteristic of any worms of the phylum Annelida

Noun

1. worms with cylindrical bodies segmented both internally and externally