cyanic |saɪˈænɪk| — (chemistry) Of cyanogen or its derivatives.

cyanide |ˈsaɪənaɪd| — any of a class of organic compounds containing the cyano radical -CN

cyanogen |saɪˈænədʒən| — a colorless toxic gas with a pungent almond odor; has been used in chemical warfare

cyanosis |ˌsaɪəˈnəʊsɪs| — a bluish discoloration of the skin and mucous membranes

cybernation |ˌsaɪbəˈneɪʃən| — the control of processes by computer

cybernetics |ˌsaɪbərˈnetɪks| — (biology) the field of science concerned with processes of communication and control (especially the comparison of these processes in biological and artificial systems)

cyberspace |ˈsaɪbərspeɪs| — a computer network consisting of a worldwide network of computer networks that use the TCP/IP network protocols to facilitate data transmission and exchange

cyclamen |ˈsaɪkləmən| — Mediterranean plant widely cultivated as a houseplant for its showy dark green leaves splotched with silver and nodding white or pink to reddish flowers with reflexed petals

cycle |ˈsaɪkl| — an interval during which a recurring sequence of events occurs

cycler |ˈsaɪklə| — Anything with a cyclic (repetitious) behaviour. Something that cycles between different states.

cyclic |ˈsaɪklɪk| — marked by repeated cycles

cyclical |ˈsɪklək(ə)l| — recurring in cycles

cycling |ˈsaɪklɪŋ| — the sport of traveling on a bicycle or motorcycle

cyclist |ˈsaɪklɪst| — a person who rides a bicycle

cycloid |ˈsaɪklɔɪd| — a line generated by a point on a circle rolling along a straight line

cyclometer |saɪˈklɑːmɪtər| — A device that counts the revolutions of a bicycle wheel in order to indicate distance travelled.

cyclone |ˈsaɪkləʊn| — (meteorology) rapid inward circulation of air masses about a low pressure center; circling counterclockwise in the northern hemisphere and clockwise in the southern

cyclonic |saɪˈklɒnɪk| — of or relating to or characteristic of the atmosphere around a low pressure center

cyclonical  — of or relating to or characteristic of the atmosphere around a low pressure center

cyclopaedia |ˌsaɪkləˈpiːdɪə| — a reference work (often in several volumes) containing articles on various topics (often arranged in alphabetical order) dealing with the entire range of human knowledge or with some particular specialty

cyclopaedic |ˌsaɪkləʊˈpiːdɪk| — Alternative form of cyclopedic.

Cyclopean |saɪˈkləʊpɪən| — of or relating to or resembling the Cyclops

cyclopedia |ˌsaɪkləˈpiːdiːə| — a reference work (often in several volumes) containing articles on various topics (often arranged in alphabetical order) dealing with the entire range of human knowledge or with some particular specialty

cyclopedic |saɪkləˈpiːdɪk| — Belonging to the circle of the sciences, or to a cyclopedia; of great range, extent, or amount.

Cyclopes |saɪˈkləʊpiːz| — only the silky anteater

Cyclops |ˈsaɪklɑːps| — (Greek mythology) one of a group of giants having a single eye in the middle of their forehead

cyclotron |ˈsaɪkləʊtrɑːn| — an accelerator that imparts energies of several million electron-volts to rapidly moving particles

cyder |ˈsaɪdər| — a beverage made from juice pressed from apples

cygnet |ˈsɪɡnət| — a young swan

cylinder |ˈsɪlɪndər| — a solid bounded by a cylindrical surface and two parallel planes (the bases)

cylindrical |səˈlɪndrɪkl| — having the form of a cylinder

cymbal |ˈsɪmbl| — a percussion instrument consisting of a concave brass disk; makes a loud crashing sound when hit with a drumstick or when two are struck together

cyme |saɪm| — more or less flat-topped cluster of flowers in which the central or terminal flower opens first

cymograph |ˈsaɪməˌɡræf| — scientific instrument consisting of a rotating drum holding paper on which a stylus traces a continuous record (as of breathing or blood pressure)

cymoscope |ˈsaɪməskəʊp| — (wireless telegraphy, disused) A detector of electromagnetic waves.

Cymric |ˈkəmrɪk| — a Celtic language of Wales

cynic |ˈsɪnɪk| — someone who is critical of the motives of others

cynical |ˈsɪnɪkl| — believing the worst of human nature and motives; having a sneering disbelief in e.g. selflessness of others

cynicism |ˈsɪnɪsɪzəm| — a cynical feeling of distrust

cynocephalus  — type genus of the family Cynocephalidae

cynosure |ˈsɪnəʃʊr| — something that provides guidance (as Polaris guides mariners)

Cynthia |ˈsɪnθɪə| — (Greek mythology) the virgin goddess of the hunt and the Moon; daughter of Leto and twin sister of Apollo; identified with Roman Diana

cypher |ˈsaɪfər| — a mathematical element that when added to another number yields the same number

cypress |ˈsaɪprəs| — wood of any of various cypress trees especially of the genus Cupressus

Cyprian |ˈsɪprɪən| — a woman who engages in sexual intercourse for money

Cypriote |ˈsɪpriːˌəʊt| — a native or inhabitant of Cyprus

Cyrillic |səˈrɪlɪk| — an alphabet derived from the Greek alphabet and used for writing Slavic languages (Russian, Bulgarian, Serbian, Ukrainian, and some other Slavic languages)

Cyrus |ˈsaɪrəs| — Persian prince who was defeated in battle by his brother Artaxerxes II (424-401 BC)

cyst |sɪst| — a closed sac that develops abnormally in some body structure

cystic |ˈsɪstɪk| — of or relating to a normal cyst (as the gallbladder or urinary bladder)

cystitis |sɪˈstaɪtɪs| — inflammation of the urinary bladder and ureters

cytokine |ˈsaɪtə(ʊ)kaɪn| — any of various protein molecules secreted by cells of the immune system that serve to regulate the immune system

cytology |saɪˈtɑːlədʒɪ| — the branch of biology that studies the structure and function of cells

cytoplasm |ˈsaɪtəʊplæzəm| — the protoplasm of a cell excluding the nucleus; is full of proteins that control cell metabolism