Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
cellŭla, ae, f. dim. [cella], a small store-room or apartment, Ter. Eun. 2, 3, 19; Col. 8, 9, 3; and acc. to cella, II. D., Petr. 11, 1.