Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Ĭlerda, ae, f., a city in Hispania Tarraconensis, on the Sicoris, now Lerida, Caes. B. C. 1, 41 sq.; Hor. Ep. 1, 20, 13; Luc. 4, 144; 261.
Hence, Ĭlerdenses, ium, m., its inhabitants, Plin. 3, 3, 4, § 24.