mĕthŏdĭcē

ēs, f.
I. the methodical part of grammar (post-Aug.): grammaticae partes duae, id est ratio loquendi, et enarratio auctorum: quarum illam methodicen, hanc historicen vocant, Quint. 1, 9, 1.
Lewis & Short
A Latin Dictionary, 1879
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