Spectrometry rhymes with:
geometry, optometry, altimetry, asymmetry, dissymmetry, geometry, optometry, symmetry, telemetry, altimetry, asymmetry, banditry, basketry, bigotry, cabinetry, circuitry, dissymmetry, gadgetry, geometry, helotry, idolatry, optometry, poetry, psychiatry, punditry, puppetry, rocketry, symmetry, telemetry, toiletry, zealotry