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secret police collapse: a police force that operates in secrecy (usually against persons suspected of treason or sedition)

visibility collapse: capability of providing a clear unobstructed view; "a windshield with good visibility"; quality or fact or degree of being visible; perceptible by the eye or obvious to the eye; "low visibility caused by fog"; degree of exposure to public notice; "that candidate does not have sufficient visibility to win an election"

timer collapse: a timepiece that measures a time interval and signals its end; a regulator that activates or deactivates a mechanism at set times

ether collapse: a colorless volatile highly inflammable liquid formerly used as an inhalation anesthetic; a medium that was once supposed to fill all space and to support the propagation of electromagnetic waves; any of a class of organic compounds that have two hydrocarbon groups linked by an oxygen atom

troposphere collapse: the lowest atmospheric layer; from 4 to 11 miles high (depending on latitude)

ionosphere collapse: the outer region of the Earth's atmosphere; contains a high concentration of free electrons

calculator collapse: a small machine that is used for mathematical calculations; an expert at calculation (or at operating calculating machines)

radio receiver collapse: an electronic receiver that detects and demodulates and amplifies transmitted signals

raid collapse: an attempt by speculators to defraud investors; search for something needed or desired; "Our babysitter raided our refrigerator"; take over (a company) by buying a controlling interest of its stock; "T. Boone Pickens raided many large companies"; search without warning, make a sudden surprise attack on; "The police raided the crack house"

imbibe collapse: receive into the mind and retain; "Imbibe ethical principles"

amplifier collapse: electronic equipment that increases strength of signals passing through it

whiff collapse: a strikeout resulting from the batter swinging at and missing the ball for the third strike; a lefteye flounder found in coastal waters from New England to Brazil; utter with a puff of air; "whiff out a prayer"; strike out by swinging and missing the pitch charged as the third; drive or carry as if by a puff of air; "The gust of air whiffed away the clouds"

refresh collapse: make fresh again; make (to feel) fresh; "The cool water refreshed us"

drip collapse: (architecture) a projection from a cornice or sill designed to protect the area below from rainwater (as over a window or doorway); the sound of a liquid falling drop by drop; "the constant sound of dripping irritated him"; flowing in drops; the formation and falling of drops of liquid; "there's a drip through the roof"; fall in drops; "Water is dripping from the faucet"

accounting collapse: a system that provides quantitative information about finances; a convincing explanation that reveals basic causes; "he was unable to give a clear accounting for his actions"; a bookkeeper's chronological list of related debits and credits of a business; forms part of a ledger of accounts

adaptation collapse: (physiology) the responsive adjustment of a sense organ (as the eye) to varying conditions (as of light); a written work (as a novel) that has been recast in a new form; "the play is an adaptation of a short novel"; the process of adapting to something (such as environmental conditions)

gasbag collapse: a boring person who talks a great deal about uninteresting topics

inspection collapse: a formal or official examination; "the platoon stood ready for review"; "we had to wait for the inspection before we could use the elevator"

shadowing collapse: the act of following someone secretly; following surreptitiously; keeping under surveillance; "always on guard against shadowing submarines"

resound collapse: ring or echo with sound; "the hall resounded with laughter"

radio collapse: a communication system based on broadcasting electromagnetic waves; medium for communication; indicating radiation or radioactivity; "radiochemistry"; transmit messages via radio waves; "he radioed for help"

surveillance collapse: close observation of a person or group (usually by the police)

device collapse: any clever maneuver; "he would stoop to any device to win a point"; "it was a great sales gimmick"; "a cheap promotions gimmick for greedy businessmen"; an instrumentality invented for a particular purpose; "the device is small enough to wear on your wrist"; "a device intended to conserve water"; an emblematic design (especially in heraldry); "he was recognized by the device on his shield"; any ornamental pattern or design (as in embroidery); something in an artistic work designed to achieve a particular effect

ventilation collapse: the act of supplying fresh air and getting rid of foul air; a mechanical system in a building that provides fresh air; "she was continually adjusting the ventilation"

cryogenics collapse: the branch of physics that studies the phenomena that occur at very low temperatures

sublimate collapse: the product of vaporization of a solid; direct energy or urges into useful activities

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