the determination of the constitution or condition of bodies and substances by means of the spectra they produce.
the ascertaining of the number and character of the constituents combining to produce a sound spectrogram.
the analysis of a spectrum to determine the properties of its source, such as the analysis of the emission spectrum of a substance to determine the electron distribution in its molecules
noun, Pathology. 1. any of a group of disorders each having symptoms that occur on a continuum and certain features that are shared along its spectrum but that manifest in markedly different forms and degrees. See also autism spectrum disorder.
noun 1. single photon emission computed tomography: a technique for measuring brain function similar to PET. SPECT abbr. single photon emission computed tomography SPECT single photon emission computed tomography
noun, plural specula [spek-yuh-luh] /ˈspɛk yə lə/ (Show IPA), speculums. 1. a mirror or reflector, especially one of polished metal, as on a reflecting telescope. 2. speculum metal. 3. Surgery. an instrument for rendering a part accessible to observation, as by enlarging an orifice. 4. Ornithology. a lustrous or specially colored area on the wings […]
adjective 1. pertaining to or having the properties of a mirror. 2. pertaining to a speculum. 3. Optics. (of reflected light) directed, as from a smooth, polished surface (opposed to diffuse). adjective 1. of, relating to, or having the properties of a mirror: specular reflection 2. of or relating to a speculum