Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
infūsĭo, ōnis, f. [infundo], a pouring in or into, a watering, wetting: infusione emollit oleum, a clyster, Plin. 20, 21, 84, § 228; v. infundo; id. 27, 13, 113, § 140: caelestis, i. e. rain, Pall. 3, 25 med.: theriacae, id. 3, 28: veneni, Ambros. Apol. Dav. 3, 11 init.: velleris, a coloring, dyeing, id. ib. 8, 45: umoris, a flowing, flow, Cael. Aur. Tard. 3, 8, 99; 154.