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, pl.


(ke-lis'ĭ-ră, -ĭ-rē),
One of the two anterior appendages of arachnids; in ticks and parasitic mites, the chelicerae are piercing and cutting structures, and constitute important feeding organs.
[G. chēlē, claw, + keras, horn]
Farlex Partner Medical Dictionary © Farlex 2012


n. pl. chelic·erae (-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.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.


one of a pair of grasping and piercing organs present in Arachnids and Horseshoe crabs.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
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MALE (MCZ 103144): Total length: 17.82, carapace (Figure 6a), length 9.16, width 8.25, chelicerae with 10 teeth on promargin.
The third possibility is that the chelicerae were used to dig or rake the sediment.
Lindquist (1998) clearly showed that in some Trombidiform lineages, the chelicerae were modified to stylets that were used to perforate the surface of plants and to extract the cellular content of plants.
Field cages were randomly assigned one of four treatments: 1) enclosures with only vegetation, where all herbivorous insects were actively excluded to serve as a control, 2) grasshoppers and vegetation, 3) vegetation, grasshoppers and spiders, and 4) vegetation, grasshoppers, and spiders with their chelicerae glued with beeswax to prevent them from subduing prey and only acting as intimidating factors.
Body [male] Length 6.3 (7.4) ([female]) Width 4.5 (5.3) Basal segment 1.65 (1.7) Chelicerae Femur Patella Pedipalp 1.4 (1.2) 0.70 (0.65) Leg I 3.0 (2.6) 1.05 (1.02) Leg II 6.2 (6.1) 1.80 (1.7) Leg III 3.3 (3.1) 1.40 (1.3) Leg IV 4.3 (4.2) 1.52 (1.5) Distal segment 1.95 (2.1) Chelicerae Tibia Metatarsus Tarsus Total Pedipalp 1.30 (0.9) -- 1.6 (1.4) 5.0 (4.15) Leg I 2.45 (2.4) 3.4 (3.3) 4.8 (4.7) 14.7 (14.02) Leg II 6.00 (5.8) 5.7 (5.5) 10.0 (9.0) 29.7 (28.1) Leg III 3.00 (2.9) 3.7 (3.6) 5.0 (4.9) 16.4 (15.8) Leg IV 4.00 (3.9) 4.8 (4.8) 8.5 (7.8) 23.12 (22.2)
The jawlike chelicerae rise 90 degrees and then slam fanged tips into the prey.
A medial unpaired labral bud and chelicerae appeared anterior to the stomodeal invagination.
They then crush the prey with their chelicerae and suck up the juices.
Sunlight illuminates her body, accentuating the furry body hairs, the minute chelicerae forking in front of her mouth, ending in hollow fangs.
The mouthparts consist of a pair of segmented palps (feelers), a pair of sharp-bladed chelicerae (pincers) that slice the skin, and a needlelike hypostome through which blood is sucked.