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52 



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circinate (seVsmat) a. [Gk. kirkinos, 

 a circle.] Rolled on the axis, so 

 that the apex is the centre (bot.). 

 circulation (seVkula'shun) n. [L. 

 circulatio^ act of circulating.] The 

 regular movement of any fluid 

 within definite channels in the 

 body (anat., phys.) ; the streaming 

 movement of the protoplasm of 

 plant cells (bot.). 



circulus (ser'kulus) n. [L. circulus, a 

 circle.] Any ringlike arrangement 

 of blood-vessels caused by branch- 

 ing or connection with one another, 

 as circulus major of iris (anat.). 

 circumduction (ser'kumduk'shun) n. 

 [L. circum, around ; ductus, led.] 

 The form of motion exhibited by 

 a bone describing a conical space 

 with the articular cavity as apex 

 (artaf., phys). 



circumferential (ser'kiimf eren'shal) a. 

 [L. circum, around ; ferre, to bear.] 

 Appl. cartilages which surround 

 certain articulatory fossae (anat.). 

 circumflex (seYkumfleks) a. [L. 

 circum, around ; flectere, to bend.] 

 Bending round ; appl. certain 

 arteries, veins, nerves (anat.). 

 circumfluence (serkum'flooens) n. 

 [L. circum, around ; fluens, flowing.] 

 In Protozoa, the engulfing of food 

 by the protoplasm flowing round 

 and enveloping it after contact 

 (zool.). 



circumnutation (ser'kumnuta'shun) n. 

 [L. circum, around ; nutare, to 

 swim.] The irregular elliptical or 

 spiral movement exhibited by the 

 apex of a growing stem or shoot 

 (bot.). 



circumoesophageal (ser'kumesof- 

 aje'al) a. [L. circum, around ; Gk. 

 oisophagos, the gullet.] Appl. 

 structures or organs surrounding 

 or passing along the gullet (zool.). 

 circumpolar (ser'kumpo'lar) a. [L. 

 circum, around ; polus, end of axle.] 

 Appl. animals found at the Poles 

 (zool.). 



circumscissile (stir'kumsis'il) a. [L. 

 circum, around ; scindere, to cut.] 

 Appl. the form of dehiscence 

 exhibited by a pyxidium (bot.). 

 circumvallation (ser'kumvala'shun) n. 

 [L. circum, around ; vallare, to 

 wall.] In Protozoa, the ingestion of 



food by the sending out of pseudo- 

 podia which ultimately surround 

 without touching it (zool.). 

 cirrate (sT/at) a. [L. cirratus, having 



ringlets.] Having cirri (zool.). 

 cirrhus and cirrhi, see cirrus, 

 cirrose (sires', sir'os) a. [L. cirrus, a 

 lock.] With cirri (zool.) ; with 

 tendrils (bot.). 



cirrus (sir'us) ., cirri (str'l) pltt. 

 [L. cirrus, a lock.] Tendrils (bot.) ; 

 the appendages of barnacles ; the 

 jointed filaments of the axis or of 

 the aboral surface of crinoids ; the 

 barbels of fishes ; the respiratory 

 and tactile appendages of worms ; 

 the organs of copulation in some 

 molluscs and trematodes ; hairlike 

 structures on the appendages of 

 insects (zool.). 



cladanthous (kladan'thCis) a. [Gk. 

 klados, a sprout ; anthos, a flower.] 

 Having terminal archegonia on 

 short lateral branches (bot.). 



cladautoicous (klad'otoik'us) a. [Gk. 

 klados, a sprout ; autos, self ; oikos, 

 house.] With antheridia on a 

 special stalk (hot.). 



cladocarpous (klad'tikar'pus) a. [Gk. 

 klados, a sprout ; karpos, a fruit.] 

 Cladanthous, which see. 



cladode (klad'od) n. [Gk. klados, a 

 sprout.] A branch arising from the 

 axil of a true leaf, resembling a 

 foliage leaf, and consisting of a 

 single internode (bot.). 



cladogenous (kladqj'enus) a. [Gk. 

 klados, a sprout ; genes, birth.] 

 Cladanthous, which see. 



cladome (kladom') n. [Gk. klados, a 

 sprout.] The group of superficially 

 situated rays in a triaene (zool.). 



cladophyll (klad'ofil) n. [Gk. klados, 

 a sprout ; phyllon, a leaf.] Cladode, 

 which see. 



cladoptosis (klad'opto'sis) . [Gk. 

 klados, a sprout ; ptosis, falling.] 

 The annual shedding of twigs 

 instead of leaves (bot.). 



cladose (klad'os, klados') a. [Gk. 

 klados, a sprout.] Branched (biol.). 



cladotyle (klad'otil) n. [Gk. klados, 

 a sprout ; tylos, a knob.] A rhabdus 

 with one actine branched, the other 

 tylote (zool.). 



clasmatocyte (klazmat'oslt, klas'mato- 

 sit) n. [Gk. klasHia, a fragment ; 



