(בֶּןאּהִנְּשַׁיאָה ), MOSES BEN-ISAAK, a Jewish writer who flourished some time during the Middle Ages in England. When and where he was born it is difficult to say. All that is known of him is that he wrote a grammar entitled לְשׁוֹן לִמּוּדַים, the preface of which has been published by L. Dukes in L.B.d. Orients, 1844, c. 518, 519. Later he wrote a dictionary under the title סֵפֶר הִשֹּׁהִם, in 180 sections, with an elaborate introduction, entitled יְסוֹד שְׁעָרַים, which, based on the labors of Ibn- Chajug (q.v.), Ibn-Ganach (q.v.), and especially Parchon, endeavors to surpass them in completeness and logical arrangement. — Furst, Bibl. Jud. 3:18; Kalisch, Hebrew Grammar (Lond. 1863), 2:28; L. Dukes, Ausfuhrliche Notiz uber Moses ibn-Nasia, wie auch Auszlige aus seinen Werken, reprinted in the Jewish Chronicle, 1849, No. 37, 38, 41-43, 46, 48. (B.P.)