S1P3E1C3T1R1U1M3
14 points
SPECTRUM is validvalid
an array of the components of a light wave [n SPECTRA, SPECTRUMS]
(Latin) an array of the components of a light wave [n SPECTRUMS or SPECTRA]
an array of the components of a light wave [n SPECTRA, SPECTRUMS]
(Latin) an array of the components of a light wave [n SPECTRUMS or SPECTRA]