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Sinus Sabaeus

American  
[see-nuhs sa-bee-uhs, sahy-] / ˈsi nəs sæˈbi əs, ˈsaɪ- /

noun

  1. an area in the southern hemisphere and near the equator of Mars, appearing dark when viewed telescopically from the earth.

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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