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Meaning of aetatis suae*

ae•ta•tis su•ae

Pronunciation: (ī-tä'tis s'ī Eng. ē-tā'tis s'ē), [key]
— Latin. Latin.
  1. in a certain year of one's age.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.