hearing-aid battery

См. также в других словарях:

• Hearing aid — Behind the ear aid In the ear aid …   Wikipedia

• hearing aid — n. a small, battery powered electronic device that amplifies sound waves, worn in or near the ear of a person who is partially deaf …   English World dictionary

• hearing aid — An electronic amplifying device designed to bring sound into the ear; it consists of a microphone, amplifier, and receiver. SYN: hearing instrument. behind the ear h. h. that rests on the medial aspect of the pinna. completely in the …   Medical dictionary

• hearing aid — a device to improve the hearing. Simple passive devices, such as ear trumpets, are now rarely used. An analogue hearing aid consists of a miniature microphone, an amplifier, and a tiny loudspeaker. The aid is powered by a battery and the whole… …   The new mediacal dictionary

• battery — /bat euh ree/, n., pl. batteries. 1. Elect. a. Also called galvanic battery, voltaic battery. a combination of two or more cells electrically connected to work together to produce electric energy. b. cell (def. 7a). 2. any large group or series… …   Universalium

• Battery — /bat euh ree/, n. The, a park at the S end of Manhattan, in New York City. Also called Battery Park. * * * Any of a class of devices, consisting of a group of electrochemical cells (see electrochemistry), that convert chemical energy into… …   Universalium

• Hearing impairment — See also: Deaf culture for the social movement.. Deaf and/or hard of hearing Classification and external resources The International Symbol for Deafness …   Wikipedia

• Battery Directive — European Union Council Directive on Batteries and Accumulators and Waste Batteries 2006/66/EC of 6 September 2006 . Batteries can contain toxic metals and, when , are considered to be hazardous waste.The European Union Battery Directive was meant …   Wikipedia

• Battery (electricity) — For other uses, see Battery (disambiguation). Various cells and batteries (top left to bottom right): two AA, one D, one handheld ham radio battery, two 9 volt (PP3), two AAA, one C, one …   Wikipedia

• hear´ing-aid´ — hearing aid, a small battery powered, electronic device which amplifies sounds, worn by people who cannot hear well. –hear´ing aid´, adjective …   Useful english dictionary

• Zinc–air battery — specific energy 470 (practical),1370 (theoretical) Wh/kg[1][2] (1.692, 4.932 MJ/kg) energy density 1480 9780 Wh/L[c …   Wikipedia