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
A sensitive device for detecting and measuring the energy of electromagnetic radiation.
Definition source: English Wiktionary via Wiktextract
Topics: natural-sciences, physical-sciences, physics
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
an instrument that measures heat radiation; extremely sensitive
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
Broader terms: measuring instrument, measuring system, measuring device
History
Etymology tree Proto-Indo-European *gwelH-der. Proto-Hellenic *gwəlnō Ancient Greek βᾰ́λλω (bắllō) Proto-Indo-European *-h2 Proto-Indo-European *-éh2 Ancient Greek -ᾱ (-ā) Ancient Greek -η (-ē) Ancient Greek βολή (bolḗ) Proto-Indo-European *meh1- Proto-Indo-European *-tḗr Proto-Indo-European *-trom Proto-Hellenic *-tron Ancient Greek -τρον (-tron) Ancient Greek μέτρον (métron)lbor. French -mètrebor. English -meter English bolometer Coined in 1878 by Samuel Pierpont Langley from Ancient Greek βολή (bolḗ, “a strike, a throw”) + -meter.
Across languages
9 source translations are retained for this English entry.
