Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
ēlectārĭum (also ēlectuārium), ii, n. [ecligma], a medicament that melts in the mouth, an electuary, Cael. Aur. Tard. 2, 13; 169, 176 al.; cf. Isid. Orig. 4, 9, 10.