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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.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


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
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(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.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Chelicera length 134.9-153.9 (144.0)/109.5-111.1 (110.3); width 38.0-50.7 (43.1)/35.0-37.0 (36.0); height 62.0-77.7 (69.9)/56.0 (56.0).
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 pedipalps and chelicera, first and fourth legs were dissected, cleared with 60% lactic acid, and mounted on glass microscope slides in Hoyer's medium (a mixture of distilled water, chloral hydrate, Arabic gum, and glycerin).
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.
Chelicera: Fixed finger with 2 large teeth plus 6 (S), 5 (?) smaller teeth between these; brush at base of fixed finger composed of 7 setae (G5A), each densely pilose in distal half; lateral surface with 3 large, lanceolate, terminally pilose setae (Gl); internal face of chelicera with 4 {$), 3 (2) short whiplike setae (G4); movable finger serrula composed of 17 (S), 18 (2) long lamellae, blunt guard tooth present subdistally; 1 accessory tooth present at two-thirds from base of serrula.
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.
Pseudoscorpion terminology and measurements largely follow Chamberlin (1931) with some minor modifications to the terminology of the trichobothria (Harvey 1992) and chelicera (Judson 2007).
lenkoranica, it differs by being smaller, more heavily armed (denticles on the body and legs are much larger and greater in number), armament on the chelicera (large teeth on the distal segment versus almost no denticles), armament on the femur of the pedipalp ventrally (the denticles are larger), in structure of the penis (more developed very dark wings versus weak light wings).