ALKABUCIUS, Abu-l-Saqr 'Abd-al-Aziz ibn-Uthman ibn-'Ali-al-Qabisi (fl. first half of the tenth century), known in Latin as Alchabitius, was a famous Muslim astronomer. He was known for his treatise al-Madkhal ila Sina 'at Ahkam al-Nudjum (Introduction to the Science of Astronomy), translated into Latin by John of Seville as Inductorium ad Scientiam Judicialem Astronomial, Differentia Prima, in the first half of the twelfth century and published in Venice in 1481. He is said to have written poetry, and a poem on the rainbow has been credited to him.
Chaucer says that he quotes Alkabucius, Astr I.8.13, referring to the treatise mentioned above.
Alkabucius is the ME variant of Latin Alchabitius, derived from the astronomer's patronymic, Ibn 'Ali-al'Qabisi.