spectrum

Definition from Wiktionary, a free dictionary

Contents 1 English 1.1 Etymology 1.2 Pronunciation 1.3 Noun 1.3.1 Derived terms 1.3.2 Related terms 1.3.3 Translations 1.4 Anagrams 2 Latin 2.1 Noun 2.1.1 Inflection 2.1.2 Descendants

[edit] English

Wikipedia

[edit] Etymology

This definition is lacking an etymology or has an incomplete etymology. You can help Wiktionary by giving it a proper etymology.

[edit] Pronunciation

• (Canadian, UK) IPA: /ˈspektrəm/
• (unknown) IPA: /ˈspɛktrəm/, SAMPA: /"spEktr@m/

• Rhymes: -ɛktrəm

•  Audio (US)^{help, file}

[edit] Noun

spectrum (plural spectra or spectrums)

1. A range; a continuous, infinite, one-dimensional set, possibly bounded by extremes.
2. Specifically, a range of colours representing light (electromagnetic radiation) of contiguous frequencies; hence electromagnetic spectrum, visible spectrum, ultraviolet spectrum, etc.
3. (chemistry) The pattern of absorption or emission of radiation produced by a substance when subjected to energy (radiation, heat, electricity, etc.).
4. (linear algebra) Of a bounded linear operator A, the scalar values λ such that the operator A—λI, where I denotes the identity operator, does not have a bounded inverse.

[edit] Derived terms

• light spectrum

[edit] Related terms

• spectral

[edit] Translations

[edit] Anagrams

• Alphagram: cemprstu
• crumpets

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[edit] Latin

[edit] Noun

spectrum (genitive spectrī); n, second declension

1. a specter

[edit] Inflection

Number	Singular	Plural
nominative	spectrum	spectra
genitive	spectrī	spectrōrum
dative	spectrō	spectrīs
accusative	spectrum	spectra
ablative	spectrō	spectrīs
vocative	spectrum	spectra

[edit] Descendants

• English: spectrum