Definition of Davy, Sir Humphry in US English:

Davy, Sir Humphry

proper noun

  • (1778–1829), English chemist; a pioneer of electrochemistry. He discovered nitrous oxide (laughing gas) and the elements sodium, potassium, magnesium, calcium, strontium, and barium. He also identified and named the element chlorine, determined the properties of iodine, and demonstrated that diamond was a form of carbon.

Pronunciation

Davy, Sir Humphry

/ˈdāvē/