Meaning of “Pluto” in the English Dictionary

american-english dictionary

"Pluto" in American English

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Plutonoun [ U ]

us /ˈplu·t̬oʊ/

a large, round mass of matter ninth in order of distance from the sun, after Neptune, considered in the past to be a planet

(Definition of “Pluto” from the Cambridge Academic Content Dictionary © Cambridge University Press)