Definition of Lowell, Percival in US English:

Lowell, Percival

proper noun

  • (1855–1916), US astronomer. He inferred the existence of a ninth planet beyond Neptune. When it was eventually discovered in 1930, it was given the name Pluto, with a symbol that also included his initials. He was the brother of poet Amy Lowell.

Pronunciation

Lowell, Percival

/ˈlōəl//ˈloʊəl/