magnetometer
(mægnɪˈtɒmɪtə(r))
[ad. F. magnétomètre, f. magnéto- magneto- + -mètre, ad. Gr. µέτρον measure, -meter.]
An instrument for measuring magnetic forces, esp. the force of terrestrial magnetism at any point.
| 1827 Eaton in Amer. Jrnl. Sci. XII. 15 Delicately suspended needles, which might be called a suit of magnetrometers [sic]. 1839 Proc. Amer. Phil. Soc. I. 154 A magnetometer for the declination. 1902 Encycl. Brit. XXX. 453/1 Under Wilde's auspices a variety of forms of magnetometers and earth-inductors have been used. |
Hence magˌneto-ˈmetric, -ˈmetrical adjs., of, pertaining to, or measured by the magnetometer. magneˈtometry, the measurement of magnetic force by means of the magnetometer (Cent. Dict.).
| 1847 Sir J. C. Ross Voy. S. & Antarctic Reg. I. 91 A valuable series of hourly magnetometric observations was continued. 1902 Encycl. Brit. XXX. 433/2 A magnetizing coil such as is used in magnetometric experiments. |