Also written as Maʽat, this Egyptian goddess personified the virtues of truth, justice, harmony, law, order and balance, among others. She weighed the hearts of the dead to see if that person was worthy of entering paradise.
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Maat was used to refer to both the goddess and the idea of the virtues she personified, and it was a very significant set of moral rules in Ancient Egyptian society, that even the creation of the universe was attributed to. An unexpected, deeply historical choice for a baby name. 

Maat

Maat Origin and Meaning