Plural of spectrum
irregular plural
The plural of spectrum is spectra or spectrums.
Forms of spectrum
| Singular | spectrum /ˈspɛktɹəm/ |
|---|---|
| Plural | spectra /ˈspɛktɹə/ spectrums |
| Countable | countable |
Spectra and spectrums in a sentence
- The presence of isoelliptic points in the spectra is indicative of the two-state nature of the transition.2012, Nina Berova, Comprehensive Chiroptical Spectroscopy. From the entry isoelliptic
- We shall call perturbations for which the ring spectra are not uniformly distributed shapeful perturbations.1998, Francesco Melchiorri, M Signore, Topological Defects In Cosmology, page 156. From the entry shapeful
- Spectra treatment corresponding to the above solutions revealed some statistically significant results.1988, E. D. Schmid, Friedemann W. Schneider, Friedrich Siebert, Spectroscopy of biological molecules: new advances : proceedings of the…. From the entry carbomonoxyhemoglobin
- We present extreme ultraviolet and visible spectra of promethiumlike tungsten and gold obtained with an electron beam ion trap (EBIT).2015, Yusuke Kobayashi, Kai Kubota, Kazuki Omote, Akihiro Komatsu, Junpei Sakoda, Maki Minoshima, Daiji Kato, Jiguang Li, Hiroyuki A.…. From the entry promethiumlike
- The recombination spectra of the non-equilibrium ensemble exhibited new lines related to formation of free positively charged magnetoplasmarons and magnetotrions..2015, A. S. Zhuravlev, V. A. Kuznetsov, L. V. Kulik, V. E. Bisti, I. V. Kukushkin, “Magnetoplasmarons and magnetotrions in a…. From the entry magnetotrions
Meaning of spectrum
- noun A range; a continuous, infinite, one-dimensional set, possibly bounded by extremes.
- noun Specifically, a range of colours representing light (electromagnetic radiation) of contiguous frequencies; hence electromagnetic spectrum, visible spectrum, ultraviolet spectrum, etc.
- noun The autism spectrum.
Nouns ending in -um: plural -a
- minimum (minima)
- medium (media)
- maximum (maxima)
- curriculum (curricula)
- referendum (referenda)
- millennium (millennia)
- consortium (consortia)
- podium (podia)
- aquarium (aquaria)
- optimum (optima)
- gymnasium (gymnasia)
- palladium (palladia)
Questions about the plural of spectrum
- What is the plural of spectrum?
- The plural of spectrum is spectra or spectrums.
- Which is correct, spectra or spectrums?
- Both are used. spectra is the more common of the two in English writing.
- Is spectrum countable?
- Spectrum is a countable noun.
Source and license
Adapted from Wiktionary: spectrum (page history and authors) and the entries of its forms. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws left out forms marked obsolete, archaic, rare or dialectal and added the examples. Wiktionary data of 2026-09-02.
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Cite this page: “Plural of spectrum.” Word.ws, https://word.ws/plural/spectrum. Based on Wiktionary, CC BY-SA 4.0.