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Montes Apenninus

American  
[mon-tuhs ap-uh-nahy-nuhs] / ˈmɒn təs ˌæp əˈnaɪ nəs /

noun

  1. a mountain range in the first and second quadrants of the visible face of the moon, forming the SE border of Mare Imbrium: about 600 miles (970 km) long.

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.

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