Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
collīsĭo (conl-), ōnis, f. [collido],
- I. a dashing or striking together, a concussion, shock: partūs abjecti, Just. 11, 12, 6.
- II. Transf., of letters in a word: πνεῖν, χεἰν, ῤεῖν, non sunt integra, sed ex collisione contracta. Macr. Diff. 19, § 17.