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Dictionary Suite
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spectacle a visible, usu. impressive thing or action, esp. a public performance or display. [3 definitions]
spectacular of, pertaining to, or like a spectacle; impressive; marvelous. [3 definitions]
spectator one that watches or observes. [2 definitions]
specter a ghost or apparition, esp. one that causes dread or terror. [2 definitions]
spectra a plural form of spectrum.
spectral of, pertaining to, or like a specter. [2 definitions]
spectro- spectrum.
spectrogram a graphic representation or photograph of a spectrum.
spectrograph a spectroscope equipped to make a photograph or graphic representation of a spectrum.
spectroheliograph a device that is used to make photographs of the sun, using a single light from the spectrum, such as violet.
spectrometer a spectroscope equipped to measure wavelengths and the positions and angles of lines in a spectrum.
spectrophotometer an instrument that measures how much light is absorbed, transmitted, or produced by an object or chemical as a function of wavelength.
spectroscope an optical instrument that enables examination, measurement, or recording of a spectrum by rendering its component electromagnetic waves, as of light or radiation, distinct and visible.
spectrum an array of a physical system or phenomenon according to the magnitude of one of its properties such as mass or wavelength, esp. an array of light in the order of wavelengths that produces the rainbow. [2 definitions]
specular of or relating to the mirror-like reflection of waves from a surface.
speculate to wonder or make a guess or guesses with respect to something. [5 definitions]
speculation the act or process of thinking, wondering, or guessing about something. [4 definitions]
speculative of, pertaining to, or based on conjecture or theorizing. [4 definitions]
speculator one that engages in financial speculations. [2 definitions]
speculum a medical instrument that can be opened after insertion, used to dilate a passage or cavity so that it can be examined. [3 definitions]
sped a past tense and past participle of speed.