spectrum
n. (pl.spectra) १ (as, an arry of the component of an emission or wave separated and arranged in the order of some varying characteristic) पंक्ति (स्त्री.), स्पेक्ट्रम (पु.) २ (in case of band spectrum), वर्णाली (स्त्री.), पट्टपंक्ति (स्त्री.) ३ Math.