either of the first pair of appendages of spiders and other arachnids, used for grasping and crushing
Origin of cheliceraModern Latin from Classical Greek ch?l?, claw (see chela) + keras, horn
Either of the first pair of fanglike appendages near the mouth of an arachnid or a horseshoe crab, often modified for grasping and piercing.
Origin of cheliceraNew Latin chela Greek keras horn ; see ker-1 in Indo-European roots.
New Latin, from Ancient Greek χηλή (khēlē, “jawbone”) + κέρας (keras, “horn”)