Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
* assessĭo (ads-), ōnis, f. [assideo], a sitting by or near one (to console him): oblitum me putas, quae tua fuerit adsessio, oratio, confirmatio animi mei fracti? Cic. Fam. 11, 27, 4.