cyanic acid

a colorless poisonous volatile liquid acid that hydrolyzes readily to ammonia and carbon dioxide ;

cyanide

an extremely poisonous salt of hydrocyanic acid ; any of a class of organic compounds containing the cyano radical -CN ;

cyanide group

the monovalent group -CN in a chemical compound ;

cyanide poisoning

poisoning due to ingesting or inhaling cyanide; common in smoke from fires and in industrial chemicals ;

cyanide process

an industrial process for extracting gold and silver by treating ore with a sodium cyanide solution ;

cyanide radical

the monovalent group -CN in a chemical compound ;

cyanine dye

any of a class of dyes containing a -CH= group linking two heterocyclic rings containing nitrogen; used as sensitizers in photography ;

cyanite

a grey or greenish-blue mineral consisting of aluminum silicate in crystalline form; occurs in metaphoric rock, used as a refractory ;

cyano group

the monovalent group -CN in a chemical compound ;

cyano radical

the monovalent group -CN in a chemical compound ;

cyanobacteria

predominantly photosynthetic prokaryotic organisms containing a blue pigment in addition to chlorophyll; occur singly or in colonies in diverse habitats; important as phytoplankton ;

cyanocitta

New World jays ;

cyanocitta cristata

common jay of eastern North America; bright blue with grey breast ;

cyanocobalamin

a B vitamin that is used to treat pernicious anemia ;

cyanogen

a colorless toxic gas with a pungent almond odor; has been used in chemical warfare ;

cyanohydrin

any organic compound in which the cyano radical -CN and the hydroxyl radical -OH are attached to the same carbon atom ;

cyanophyceae

photosynthetic bacteria found in fresh and salt water, having chlorophyll a and phycobilins; once thought to be algae: blue-green algae ;

cyanophyta

prokaryotic organisms sometimes considered a class or phylum or subkingdom; coextensive with the Cyanophyceae: cyanobacteria (blue-green algae) ;

cyanosis

a bluish discoloration of the skin and mucous membranes; a sign that oxygen in the blood is dangerously diminished (as in carbon monoxide poisoning) ;

cyanuramide

a white crystalline organic base; used mainly in making melamine resins ;

cyanuric acid

a trimer of cyanic acid ;

cyathea

type genus of the Cyatheaceae: tree ferns of the tropical rain forest to temperate woodlands ;

cyathea medullaris

a showy tree fern of New Zealand and Australia having a crown of pinnated fronds with whitish undersides ;

cyatheaceae

tropical tree ferns ;

cybele

great nature goddess of ancient Phrygia in Asia Minor; counterpart of Greek Rhea and Roman Ops ;

cyber-terrorism

an assault on electronic communication networks ;

cyber-terrorist

a programmer who breaks into computer systems in order to steal or change or destroy information as a form of cyber-terrorism ;

cyberart

art that is produced with the help of computer hardware and software ;

cybercafe

a cafe whose customers sit at computer terminals and log on to the internet while they eat and drink ;

cybercrime

crime committed using a computer and the internet to steal a person's identity or sell contraband or stalk victims or disrupt operations with malevolent programs ;

cyberculture

the culture that emerges from the use of computers for communication and entertainment and business ;

cybernation

the control of processes by computer ;

cybernaut

a computer user who uses the internet; someone who explores cyberspace ;

cybernetics

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

cyberphobia

irrational fear of computers or technology ;

cyberpunk

a genre of fast-paced science fiction involving oppressive futuristic computerized societies ; a writer of science fiction set in a lawless subculture of an oppressive society dominated by computer technology ; a programmer who breaks into computer systems in order to steal or change or destroy information as a form of cyber-terrorism ;

cybersex

sexual arousal involving communication on the internet ;

cyberspace

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

cyberwar

an assault on electronic communication networks ;

cyborg

a human being whose body has been taken over in whole or in part by electromechanical devices; "a cyborg is a cybernetic organism" ;