combining form of Gr. κύκλος circle (see CYCLE), occurring in many technical terms; e.g., Cyolobranchiate a. [Gr. βράγχια gills], having gills circularly arranged; applied to a suborder of gastropodous mollusks (Cyclobranchia, -branchiata); also said of the gills. Cyclocentric a. (see quot.). Cyclocephalian, -lic a., Cyclocephalus [κεφαλή head] (see quots.). Cycloclinal a. Geol. [cf. ANTICLINAL], sloping in all directions from a central point; = QUAQUAVERSAL. Cyclocœlic a. [κοιλία intestines], having the intestines coiled: said of birds; opposed to orthocœlic. Cyologangliate, -ated a. Zool., having circularly arranged ganglia. Cyclogen Bot. [-γενης born, produced], a plant having woody tissue disposed in concentric circles; = EXOGEN; so Cyclogenous a. (Syd. Soc. Lex.). Cyclograph [-γραφος writer], an instrument for tracing circular arcs. Cyclographer, a writer of a cycle (of legends, etc.). Cyclolith [λίθος stone, after monolith, etc.], a name given by some archæologists to a prehistoric stone circle. Cycloneurous, -ose a. Zool., having the nervous axis circularly arranged, as in the Radiata. Cyclopterous a. [πτερόν wing], round-winged, round-finned. Cycloscope [-σκοπος viewing], (a) an apparatus for measuring the velocity of revolution, by means of a revolving ruled cylinder, viewed through an aperture partially closed by a tuning-fork vibrating at a known rate; (b) an instrument for setting out railway curves. Cyclospermous a. Bot. [σπέρμα seed], having the embryo coiled about the central albumen. Cyclostomate, -stomatous, -stomous a. [στόμα mouth], having a round sucking mouth, as a lamprey, or a circular aperture of the shell, as some gastropods; also belonging to a certain division of the Polyzoa (Cyclostomata), having the cell-mouth not guarded by an operculum or process. Cyclostome a. = Cyclostomous; sb. a cyclostomous fish, as the lamprey; a cyclostomous gastropod. Cyclosystem, the circular system or arrangement of the pores in some Hydrocorallina (Millepores, etc.).
1836–9. Todd, Cycl. Anat., II. 388/1. In the Cyclobranchiate order.
1854. Woodward, Mollusca (1856), 154. The cyclobranchiate gill of Patella.
1882. Syd. Soc. Lex., Cyclocentric, a term applied to those coiled shells which have the starting-point of the spiral at a little distance from the centre, so that the first whorl runs around it. Cyclocephalic, having the characters of a Cyclocephalus. Also, applied to the form of the head of an hydrocephalic person. Cyclocephalus, a monster having two contiguous eyes, or a double eye in the median line.
1876. Page, Adv. Text-bk. Geol., iv. 84. Periclinal, cycloclinal or quaquaversal … that is dipping in every direction.
1836–9. Todd, Cycl. Anat., II. 412/2. The … cyclogangliate … divisions of the animal kingdom. Ibid., 392/2. The nervous system of the Gasteropoda … the most perfect form of the … cyclo-gangliated type.
1823. P. Nicholson, Pract. Build., 562. The Cyclograph is an instrument for drawing arcs of circles.
1841–4. C. Anthon, Class. Dict., 353. Dionysius, the cyclographer, makes Circe the daughter of Æëtes.
1835–6. Todd, Cycl. Anat., I. 107/2. An organization generally more complex than that of the cyclo-neurose classes.
1866. Engineer, 415. The Cycloscope.
1839–47. Todd, Cycl. Anat., III. 966/2. In the cyclostomatous Fishes … the skeleton is of still more simple structure.
1835. Kirby, Hab. & Inst. Anim., II. xxi. 390. The Cyclostomes or suckers, with regard to their skeletons, are the most imperfect of all the Vertebrates.
1854. Badham, Halieut., 440. Our little cyclostome … the lamprey.
1855. H. Spencer, Princ. Psychol., § 8. The cyclostome Fishes.
1826. Kirby & Sp., Entomol., xlvii. (1828), IV. 427. Some of the cyclostomous fishes … are supposed to connect the fishes with the Annulosa.
