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n. pl. che·lic·er·ae (-ə-rē′)
Either of the first pair of fanglike appendages near the mouth of an arachnid or a horseshoe crab, often modified for grasping and piercing.

[New Latin : chela + Greek keras, horn; see ker- in Indo-European roots.]


n, pl -erae (-əˌriː)
(Zoology) one of a pair of appendages on the head of spiders and other arachnids: often modified as food-catching claws
[C19: from New Latin, from French chélicère, from chél- see chela1 + -cère from Greek keras horn]
cheˈliceral adj


(kəˈlɪs ər ə)

n., pl. -er•ae (-əˌri)
one member of the first pair of usu. pincerlike appendages of spiders and other arachnids.
[1825–35; < New Latin, =cheli- cheli- + Greek kér(as) horn + Latin -a feminine n. ending]
che•lic′er•al, adj.
che•lic′er•ate` (-əˌreɪt, -ər ɪt) adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.chelicera - either of the first pair of fang-like appendages near the mouth of an arachnid; often modified for grasping and piercing
appendage, extremity, member - an external body part that projects from the body; "it is important to keep the extremities warm"
References in periodicals archive ?
The study contains a detailed description of a larva of the Eratigena atrica spider, which had a well-developed prosoma and an additional, partly developed head with two segmented pedipalps and one chelicera with two fangs.
A single chelicera of the eurypterid Pterygotus anglicus (NBMG 10237; Miller 2007a) has been found, as well as partial fin spines tentatively attributed to the shark Doliodusproblematicus (NBMG 10237, 12074; see Miller et al.
microplus chelicera appear to be able to distinguish serum components that differ between susceptible and resistant hosts.
Then they pull out one chelicera and leave the other one hanging out there with the spider prey impaled on it," Wood says.
Chelicera with number of setae of the hand, galea and number of plates in the serrula exterior as described by Hoff (1964), rallum composed of 3 blades, the most distal blade serrate; movable finger with subapical lobe long and curved.
The two species can, however, be readily distinguished by the following features: (i) a different pattern of pigmentation of the chelicera (see Figs 3 and 4); (ii) a different pectinal tooth count: 13/14 in T.
Within the Euseiini, this genus is diagnosed on the basis of different characters, including the reduced, vase shaped or ovoid female ventrianal shield; peritreme usually short, not reaching to level of setae j3; chelicera reduced, with small teeth on fixed digit clustered apically and with inner margin strongly concave, and movable digit with one or no tooth.