Gram's method Gram method Gram's procedure Gram's stain Gram stain | a staining technique used to classify bacteria, bacteria are stained with gentian violet and then treated with Gram's solution, after being decolorized with alcohol and treated with safranine and washed in water, those that retain the gentian violet are Gram-positive and those that do not retain it are Gram-negative |
radio observation | an observation made with a radio telescope |
clock radio | a radio that includes a clock that can be set to turn it on automatically |
omnirange omnidirectional range omnidirectional radio range | a navigational system consisting of a network of radio beacons that provide aircraft with information about exact position and bearing |
push-button radio | a radio receiver that can be tuned by pressing buttons |
radar microwave radar radio detection and ranging radiolocation | measuring instrument in which the echo of a pulse of microwave radiation is used to detect and locate distant objects |
radio wireless | a communication system based on broadcasting electromagnetic waves |
radio antenna radio aerial | omnidirectional antenna comprising the part of a radio receiver by means of which radio signals are received |
radio beacon beacon | a radio station that broadcasts a directional signal for navigational purposes |
radio chassis | a chassis for a radio receiver |
radio compass | a direction finder that gives a bearing by determining the direction of incoming radio signals |
radio interferometer | radio telescope that uses interference patterns from two antennas instead of a parabolic antenna |
radio link link | a two-way radio communication system (usually microwave), part of a more extensive telecommunication network |
radio-phonograph radio-gramophone | electronic equipment consisting of a combination of a radio receiver and a record player |
radio receiver receiving set radio set radio tuner wireless | an electronic receiver that detects and demodulates and amplifies transmitted signals |
radio station | station for the production and transmission of AM or FM radio broadcasts |
radio telescope radio reflector | astronomical telescope that picks up electromagnetic radiations in the radio-frequency range from extraterrestrial sources |
radio transmitter | transmitter that is the part of a radio system that transmits signals |
radio brightness | the strength of a radio wave picked up by a radio telescope |
radio frequency | an electromagnetic wave frequency between audio and infrared |
radio astronomy | the branch of astronomy that detects and studies the radio waves emitted by celestial bodies |
radio radiocommunication wireless | medium for communication |
radio broadcast | a broadcast via radio |
radio news | a radio broadcast of news |
radio beam beam | a signal transmitted along a narrow path, guides airplane pilots in darkness or bad weather |
radio beacon | a characteristic signal emitted by a transmitter used for navigation |
radio noise | static at radio wavelengths |
quasar quasi-stellar radio source | a starlike object that may send out radio waves and other forms of energy, many have large red shifts |
radio source | an object that radiates radio waves |
radio announcer | an announcer whose voice is broadcast on radio |
radio operator | someone who operates a radio transmitter |
De Forest Lee De Forest Father of Radio | United States electrical engineer who inpatented the first triode vacuum tube, which made it possible to detect and amplify radio waves (-) |
Gram Hans C. J. Gram | Danish physician and bacteriologist who developed a method of staining bacteria to distinguish among them (-) |
radiopacity radio-opacity | opacity to Xays or other radiation |
radio wave radio emission radio radiation | an electromagnetic wave with a wavelength between . cm to , m |
radio signal | a radio wave used to transmit and receive messages |
radio spectrum radio-frequency spectrum | the entire spectrum of electromagnetic frequencies used for communications, includes frequencies used for radio and radar and television |
pigeon pea pigeon-pea plant cajan pea catjang pea red gram dhal dahl Cajanus cajan | tropical woody herb with showy yellow flowers and flat pods, much cultivated in the tropics |
horse gram horse grain poor man's pulse Macrotyloma uniflorum Dolichos biflorus | twining herb of Old World tropics cultivated in India for food and fodder, sometimes placed in genus Dolichos |
mung mung bean green gram golden gram Vigna radiata Phaseolus aureus | erect bushy annual widely cultivated in warm regions of India and Indonesia and United States for forage and especially its edible seeds, chief source of bean sprouts used in Chinese cookery, sometimes placed in genus Phaseolus |
gram gramme gm g | a metric unit of weight equal to one thousandth of a kilogram |
gram atom gram-atomic weight | the quantity of an element whose weight in grams is numerically equal to the atomic weight of the element |
gram molecule mole mol | the molecular weight of a substance expressed in grams, the basic unit of amount of substance adopted under the Systeme International d'Unites |
calorie gram calorie small calorie | unit of heat defined as the quantity of heat required to raise the temperature of gram of water by degree centigrade at atmospheric pressure |
Gram's solution | a solution used in staining bacteria by Gram's method, consists of one part iodine and two parts potassium iodide and parts water |
radio | transmit messages via radio waves, he radioed for help |
radiopaque radio-opaque | not transparent to X-rays or other forms of radiation, barium sulfate is radiopaque |
radio-controlled | operated and guided by radio, a radio-controlled airplane |
Gram-positive | (of bacteria) being or relating to a bacterium that retains the violet stain used in Gram's method |
Gram-negative | (of bacteria) being of or relating to a bacterium that does not retain the violet stain used in Gram's method |