Definitions

1. noun

The ninth and smallest planet in the solar system, discovered in 1930, which is now classified as a dwarf planet.

“The astronomer studied the dwarf planet Pluto and its unique orbit.”

2. proper noun

A fictional character created by Walt Disney and Ub Iwerks, first appearing in the 1930 cartoon short “The Night Before Christmas,” and later becoming the main character in the Mickey Mouse universe.

“Mickey and his friends were invited to Pluto’s birthday party.”

3. noun

A large dog, typically a yellowish-brown color, and often associated with Mickey Mouse.

“The family adopted a new pet, a playful and lovable Pluto.”