Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
dēdĭcātĭo, ōnis, f. [dedico], dedication, consecration: aedis, Liv. 2, 27: theatri, Plin. 7, 48, 49, § 158; Suet. Claud. 21: pontis, id. Calig. 32: domus Dei, Vulg. 1 Esdr. 6, 16: statuae, id. Dan. 3, 2 al.