There are 2 definitions of Mensa in English:

Mensa1

Line breaks: Mensa
Pronunciation: /ˈmɛnsə
 
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Astronomy
A small, faint southern constellation (the Table or Table Mountain), lying between Dorado and the south celestial pole. It contains part of the Large Magellanic Cloud.

Origin

Latin.

Definition of Mensa in:

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Word of the day premonition
Pronunciation: ˌprɛməˈnɪʃ(ə)n
noun
a strong feeling that something will happen …

There are 2 definitions of Mensa in English:

Mensa2

Line breaks: Mensa
Pronunciation: /ˈmɛnsə
 
/
An international organization founded in England in 1945 whose members must achieve very high scores in IQ tests to be admitted.

Origin

Latin, 'table', with allusion to a round table at which all members have equal status.

Definition of Mensa in: