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 (sûr′kəs, kĕr′-)
n. pl. cer·ci (sûr′sī, -kī, kĕr′kē)
Either of a pair of appendages located near the tip of the abdomen in many insects and certain other arthropods, usually having a sensory function.

[New Latin, from Greek kerkos, tail.]
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 -ci (-siː)
(Zoology) one of a pair of sensory appendages at the tip of the abdomen of some insects and other arthropods
[C19: from New Latin, from Greek kerkos tail]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈsɜr kəs, ˈkɛr-)

n., pl. cer•ci (ˈsɜr saɪ, ˈkɛr ki)
one of a pair of usu. jointed feelers at the rear of the abdomen of some insects.
[1820–30; < New Latin < Greek kérkos tail]
cer′cal, adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
But even in males the various diagnostic characters can be contradicting, as e.g., in our male from Zuunkharaa with cerci like daurica and spinules like chinensis.
Tergum 9 sub-rectangular, with fleshy, setose cerci; tergum 10 conical.
Cerci, 22, put the Giallorossi ahead on the stroke of half-time before adding his second shortly after the re-start.
Remarks: The male genitalia of this new species resembles Onesia huaxiae Feng et Xue 2000, but it differs from the latter in inner margin of lateral lobe of sternite 5 with thin fringe, in profile, surstyli bend distinctly, distal part of cerci slightly flat, in dorsal view, surstyli becoming thin.
The similar shape of male cerci is suggested as another indication for the possible relatedness of Gnathoclita and Disceratus (Gorochov 2014).
7-8) elongate-protrusible; extended eighth segment (beyond tergite and sternite) with evenly scattered, short setae; ninth segment about twice length of seventh tergite, with numerous short setae throughout; tenth tergite asetose; cerci (Fig.
Male cerci are long, curving inward, and uniformly pointed, with a shorter internal spine-like process, while in Anaphidna they are divided into two lobes of almost equal length that are movable in relation to each other.
The latter authors considered that the position of the Megalotheca type species and some species related to it is unclear as their male cerci are very different from those of Conocephalus, and their male genitalia are unknown.
15-16): Cerci convex apically, each with several apical and apicoventral setae; hypoproct gradually widening from midlength to apex, posterior edge nearly straight across, with several apical and apicoventral setae; aedeagus dorsoventrally flattened, in dorsoventral view widest near midlength, the apex convex, 3 pairs of papillae present on each side; gonocoxite thickset at base, with cylindrical, apically rounded, elongate-setulose mesal lobe; gonostylus broadest at base, tapering to apical tooth, setulose on basal half, ridged beyond.
Some taxa within Rhacocleis and Pterolepis show male cerci that are more robust or possess another armature, however still differing considerably from that of the new species.
Her new arch nemesis -- now that Cerci seems quite doomed -- the Mother of Dragons, First of her Name (and so on), Daenerys Targaryen is flying swiftly into the 'mad' space.