Definition

Noun: - A major taxonomic group (superclass) within the phylum Arthropoda, comprising arthropods characterized by having chelicerae (pincer-like mouthparts) and a body divided into two main tagmata: the prosoma (cephalothorax) and the opisthosoma (abdomen). This group lacks antennae and mandibles.

Usage

• Scientific Classification: Used primarily in zoological and biological contexts to classify a specific lineage of arthropods.

Advanced Usage

• Phylogenetic Context: The term is used in evolutionary biology and systematics to discuss the relationships between different arthropod groups.

Variants and Related Words

• Chelicerate (noun): Any member of the superclass Chelicerata.
• Cheliceral (adjective): Pertaining to the chelicerae.

Synonyms

• Chelicerates (when used as a common name for the group members).

Different Meanings

• This term has a single, specific meaning in biological taxonomy. It does not have general or figurative meanings.

Notes

• The name "Chelicerata" is derived from the Greek words (claw) and (horn), referring to the characteristic claw-like mouthparts.
• While "superclass" is a taxonomic rank, "Chelicerata" is often used alone to refer to this group in both scientific and general contexts.

Noun

1. spiders; scorpions; horseshoe crabs