Standard Lemma guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
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noun
an instrument that produced monochromatic photographs of the sun using light at a selected wavelength
Definition source: English Wiktionary via Wiktextract
Topics: astronomy, natural-sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
History
Etymology tree Latin speciō Proto-Indo-European *-trom Proto-Italic *-trom Latin -trum Latin spectrumbor. English spectrum English spectro- English heliograph English spectroheliograph From spectro- + heliograph.
Across languages
1 source translations are retained for this English entry.
