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What does excitation mean?

Looking for the meaning or definition of the word excitation? Here's what it means.

Noun
  1. The act of exciting or putting in motion; the act of rousing up or awakening.
  2. The act of producing excitement (stimulation); also, the excitement produced.
  3. (physiology) The activity produced in an organ, tissue, or part, such as a nerve cell, as a result of stimulation
  4. (physics) The change in state as an excited state is formed by the absorption of a quantum of energy
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Variable frequency sawtooth waveforms are often utilized as an excitation signal in a digital musical synthesizer.
The excitation source used was an argon-ion laser-pumped, regeneratively amplified Ti-sapphire laser operating at 250 kHz repetition rate.
The isotropic emission spectra were normalized to the corresponding absorbance at the excitation wavelength.
This led us to shift the excitation to a lower wavelength to minimize the contribution from Rayleigh scattering in the emission spectra.
Chemiluminescence is a special case of luminescence in which the excitation source is a chemical reaction.
The major axes of both ellipses point nearly in the direction of maximum hair bundle excitation.

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