In 2006 the International Astronomical Union defined planet in such a way as to exclude Pluto, reclassifying it instead as a dwarf planet. Although discussion of the matter continues, the change has been widely accepted.
Examples of Pluto in a Sentence
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'Pluto.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.