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mensa(men -să) (plural: mensae) a flat-topped elevation with steep sides. The word is used in the approved name of such a surface feature on a planet or satellite.
Mensa(men -să) (Table Mountain) A small inconspicuous constellation in the southern hemisphere, close to the south pole, the brightest stars being of 5th magnitude. It contains part of the Large Magellanic Cloud. Abbrev.: Men; genitive form: Mensae; approx. position: RA 5.5h, dec –78°; area: 153 sq deg.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.
a circumpolar constellation of the southern hemisphere with no stars brighter than visual stellar magnitude 4.0. Mensa is not visible from the territory of the USSR. (SeeSTELLAR SKY.)
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
1. The stone slab or other piece forming the top of an altar.
2. The upper surface of an altar.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.