Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
* sēcrētĭo, ōnis, f. [secerno], a dividing, sundering, separation: est interitus quasi discessus et secretio ac diremptus earum partium, quae ante interitum junctione aliquā tenebantur, Cic. Tusc. 1, 29, 71.