Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
schĕda, v. scida.
scĭda or schĕda, ae, f., = σχίδν, σχέδη, a strip of papyrus bark, Plin. 13, 12, 23, § 77.
Form scheda, a leaf or sheet of paper, Cic. Att. 1, 20, 7; id. Fam. 15, 16, 1; Quint. 1, 8, 19; Mart. 4, 89, 4 (form scheda; al. scida).