| nephelite | <chemical> A mineral occuring at Vesuvius, in glassy agonal crystals; also elsewhere, in grayish or greenish masses having a greasy luster, as the variety elaeolite. It is a silicate of aluminia, soda, and potash. Origin: gr. Cloud: cf. F. Nepheline. Cf. Nebula. Source: Websters Dictionary (01 Mar 1998) |
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| nephelodometer | <meteorology> An instrument for reckoning the distances or velocities of clouds. Origin: Gr. A cloud + way. Source: Websters Dictionary (01 Mar 1998) |
| nephelometer | An instrument used in nephelometry. Origin: G. Nephele, cloud, + metron, measure (05 Mar 2000) |
| nephelometric turbidity unit | A measurement unit of the clarity of water, dependent on the amount of suspended matter. (05 Dec 1998) |
| nephelometry | <technique> Any method for estimating the concentration of cells or particles in a suspension by measuring the intensity of scattered light, often at right angles to the incident beam. Light scattering depends upon number, size and surface characteristics of the particles. (18 Nov 1997) |
| nephelometry and turbidimetry | Chemical analysis based on the phenomenon whereby light, passing through a medium with dispersed particles of a different refractive index from that of the medium, is attenuated in intensity by scattering. In turbidimetry, the intensity of light transmitted through the medium, the unscattered light, is measured. In nephelometry, the intensity of the scattered light is measured, usually, but not necessarily, at right angles to the incident light beam. (12 Dec 1998) |
| nephoscope | <instrument, meteorology> An instrument for observing the clouds and their velocity. Origin: Gr. A cloud + -scope. Source: Websters Dictionary (01 Mar 1998) |
| nephr- | See: nephro-. (05 Mar 2000) |
| nephradenoma | <tumour> Obsolete term for adenoma of the kidney. Origin: nephr-+ adenoma (05 Mar 2000) |
| nephralgia | Rarely used term for pain in the kidney. Origin: nephr-+ G. Algos, pain (05 Mar 2000) |
| nephralgic | Relating to nephralgia. (05 Mar 2000) |
| nephralgy | <medicine> Neuralgia of the kidneys; a disease characterised by pain in the region of the kidneys without any structural lesion of the latter. Origin: NL. Nephralgia, fr. Gr. A kidney + pain: cf. F. Nephralgie. Source: Websters Dictionary (01 Mar 1998) |
| nephratonia | Nephratony An obsolete term for diminished functional activity of the kidneys. Origin: nephr-+ G. A-priv. + tonos, tension (05 Mar 2000) |
| nephrectomy | <procedure, surgery> The surgical removal of a kidney. (27 Sep 1997) |
| nephredema | Oedema caused by renal disease; rarely, oedema of the kidney. Origin: nephr-+ G. Oidema, swelling (05 Mar 2000) |