chelicerate

/ (kɪˈlɪsəˌreɪt) /

adjective

of, relating to, or belonging to the Chelicerata, a subphylum of arthropods, including arachnids and the horseshoe crab, in which the first pair of limbs are modified as chelicerae

noun

any arthropod belonging to the Chelicerata

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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for chelicerate

chelicerate
[ kə-lĭsər-āt′, -ĭt ]

Any of various, mostly terrestrial arthropods of the subphylum Chelicerata, having a body divided into two main parts: a cephalothorax and an abdomen. Chelicerates have specialized feeding appendages (chelicerae) and lack antennae. Chelicerates include the arachnids and merostomes (horseshoe crabs) and are closely related to the extinct trilobites.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.