Phrase 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.
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No pronunciation record was provided for this word.
noun
An airtight glass bulb containing a partial vacuum and a set of vanes, mounted on a spindle, which rotate when exposed to light, providing a quantitative measurement of electromagnetic radiation intensity.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Synonyms: Crookes radiometer
Antonyms: none provided
History
By analogy with windmill and water mill.
