(fl 15th century).
?Portuguese writer of Jewish origin. A treatise on the preparation of colours and gold for use in manuscript illumination (Parma, Bib. Palatina, MS. De Rossi 945) has been attributed to him (for a contrary opinion see Metzger); it is the only extant book of this kind apparently written by a Jew. The Portuguese text is written in Hebrew characters. An ornate signature of Abraham ibn Hayyim appears on fol. 20r, and an inscription of fol. 1r states that the work was written by him in Loulé in 1262; the author was consequently believed to have lived in the 13th century, but the treatise is now generally accepted as being of the 15th century, when Portugal, especially Lisbon, was an important centre of Hebrew manuscript illumination. It has been suggested that Joseph ibn Hayyim, the artist who illuminated the Kennicott Bible (1476; Oxford, Bodleian Lib., MS. Kenn. 1; ...