Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
aestĭmātus, ūs, 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).