Lewis Short
aestĭmātus (noun M) : aestimo, = aestimatio; found only in the abl.:
* Aetatis,in valuing, considering, the time,Macr. S. 1, 16: in aestimatu est mel e thymo, in value, i. e. much esteemed, Plin. 11, 15, 15, § 38 (cf. in pretio habere, Tac. G. 5).
Charlton T. Lewis, Charles Short, A Latin Dictionary