| NOUN | person | Rayleigh, Third Baron Rayleigh, Lord Rayleigh, John William Strutt | English physicist who studied the density / density of gases and discovered argon |
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| Meaning | English physicist who studied the density / density of gases and discovered argon; made important contributions to acoustic theory (1842-1919 ). | |
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| Synonyms | Third Baron Rayleigh, Lord Rayleigh, John William Strutt | |
| Instance of | physicist | A scientist trained in physics |