Definition of chelicerate in US English:

chelicerate

noun

Zoology
  • An arthropod of the large group Chelicerata; an arachnid, sea spider, or horseshoe crab.

    • ‘They may represent a very early branching of the chelicerate lineage.’
    • ‘To overcome this problem, we used numerous representatives of each: four crustaceans, three myriapods, and even a chelicerate.’
    • ‘Whilst insects are defined as having three fused body sections, the chelicerates have two.’
    • ‘Another feature of the diagram above and an important character for the chelicerates are the mouthparts.’
    • ‘Some arachnid chelicerates are parasites, such as ticks and mites.’

adjective

Zoology
  • Relating to or denoting chelicerates.

    • ‘They may represent a very early branching of the chelicerate lineage.’
    • ‘All chelicerate arthropods have this special first set of modified legs.’
    • ‘The chelicerate hemocyanin subunits are basal, consistent with the assumption that the Chelicerata is a rather distinct arthropod taxon.’
    • ‘This is the tactic used by scorpions, another group of chelicerate predators.’
    • ‘In all cases, the two chelicerate species form a clade which is quite distinct from a Hexapoda / Crustacea clade.’

Pronunciation

chelicerate

/kəˈlisəˌrāt/