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单词 hydrophone
释义

hydrophonen.

Brit. /ˈhʌɪdrəfəʊn/, U.S. /ˈhaɪdrəˌfoʊn/
Etymology: < hydro- comb. form 1 + Greek -ϕωνος, < ϕωνή voice, sound, on analogy of microphone, etc.
An instrument for the detection of sound by water; also of water, or of something in water, by sound.
a. A bag containing water, placed between the stethoscope and the chest, to intensify the sounds heard in auscultation.
ΘΚΠ
the world > health and disease > healing > diagnosis or prognosis > examination > [noun] > auscultation > instruments used in
stethoscope1820
otophone1839
otoscope1849
stethophone1858
phonoscope1859
hydrophone1860
thoracoscope1895
fetoscope1939
phonoscope1959
1860 Year-bk. Med. 1859 (New Sydenham Soc.) 59 A water-bag increases the impression conveyed to the ear by the wooden stethoscope if it be placed between the flat ear-piece and the external ear. The name of hydrophone has been given to it.
1862 H. W. Fuller On Dis. Chest 76 Another form of instrument, introduced by Dr. Scott Alison, and termed by him a ‘hydrophone’.
b. (See quot. 1887.)
ΚΠ
1887 Engineering 29 July 131 The hydrophone..is a clever little instrument devised to detect any water escapes from the mains or service pipes, cocks or closets.
c. An instrument devised to give warning by electricity to a port or fleet of the approach of a hostile vessel.
ΘΚΠ
society > communication > indication > signalling > audible signalling > [noun] > apparatus
soundera1884
hydrophone1893
1893 Daily News 8 June 5/8 Captain McEvoy's hydrophone..in connection with a new instrument named a kinesiscope..has for its object the prevention of surprise attacks from torpedo boats, or other hostile vessels, approaching anchorages or mine fields.
This entry has not yet been fully updated (first published 1899; most recently modified version published online March 2022).
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n.1860
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