Lowell Observatory
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noun
the astronomical observatory, situated in Flagstaff, Arizona, at which Pluto was discovered in 1930.
QUIZ
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Test how much you really know about regular and irregular plural nouns with this quiz.
Question 1 of 9
Which of the following nouns has an irregular plural form?
Origin of Lowell Observatory
Named after P. Lowell
Words nearby Lowell Observatory
low-density lipoprotein, low-density polyethylene, lowdown, lowe, Lowell, Lowell Observatory, low-end, lower, lower airway, Lower Austria, lower bound
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022