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earphone collapse: electro-acoustic transducer for converting electric signals into sounds; it is held over or inserted into the ear; "it was not the typing but the earphones that she disliked"

loudspeaker collapse: electro-acoustic transducer that converts electrical signals into sounds loud enough to be heard at a distance

tweeter collapse: a loudspeaker that reproduces higher audio frequency sounds; "the sound system had both tweeters and woofers"

cone collapse: any cone-shaped artifact; visual receptor cell sensitive to color; cone-shaped mass of ovule- or spore-bearing scales or bracts; a shape whose base is a circle and whose sides taper up to a point; make cone-shaped; "cone a tire"

speaker collapse: someone who expresses in language; someone who talks (especially someone who delivers a public speech or someone especially garrulous); "the speaker at commencement"; "an utterer of useful maxims"; the presiding officer of a deliberative assembly; "the leader of the majority party is the Speaker of the House of Representatives"

diaphragm collapse: a mechanical device in a camera that controls size of aperture of the lens; "the new cameras adjust the diaphragm automatically"; electro-acoustic transducer that vibrates to receive or produce sound waves; a contraceptive device consisting of a flexible dome-shaped cup made of rubber or plastic; it is filled with spermicide and fitted over the uterine cervix; (anatomy) a muscular partition separating the abdominal and thoracic cavities; functions in respiration

horn collapse: one of the bony outgrowths on the heads of certain ungulates; any hard protuberance from the head of an organism that is similar to or suggestive of a horn; an alarm device that makes a loud warning sound; a high pommel of a Western saddle (usually metal covered with leather); a noisemaker (as at parties or games) that makes a loud noise when you blow through it; a noise made by the driver of an automobile to give warning;; the material (mostly keratin) that covers the horns of ungulates and forms hooves and claws and nails; stab or pierce with a horn or tusk; "the rhino horned the explorer"

demagogue collapse: an orator who appeals to the passions and prejudices of his audience

ranter collapse: someone who rants and raves; speaks in a violent or loud manner

monad collapse: (biology) a single-celled microorganism (especially a flagellate protozoan); a singular metaphysical entity from which material properties are said to derive; (chemistry) an atom having a valence of one

calorie collapse: unit of heat defined as the quantity of heat required to raise the temperature of 1 gram of water by 1 degree centigrade at atmospheric pressure; a unit of heat equal to the amount of heat required to raise the temperature of one kilogram of water by one degree at one atmosphere pressure; used by nutritionists to characterize the energy-producing potential in food

kilometer collapse: a metric unit of length equal to 1000 meters (or 0.621371 miles)

medallion collapse: an emblem indicating that a taxicab is registered; a circular helping of food (especially a boneless cut of meat); "medallions of veal"; any of various large ancient Greek coins

chemical element collapse: any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter

elementary particle collapse: (physics) a particle that is less complex than an atom; regarded as constituents of all matter

lux collapse: a unit of illumination equal to 1 lumen per square meter; 0.0929 foot candle

lumen collapse: a cavity or passage in a tubular organ; "the lumen of the intestine"; a unit of luminous flux equal to the amount of light given out through a solid angle of 1 steradian by a point source of 1 candela intensity radiating uniformly in all directions

phalanx collapse: any of the bones of the fingers or toes; a body of troops in close array; any closely ranked crowd of people

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