زيجزِيج The builder's string, or line, (K in art. زوج, improperly there mentioned, TA,) which he extends to make even, thereby, the row of stones, or bricks, of the building; syn. مِطْمَرٌ [q. v.]: (TA:) [also called زِيقٌ:] an arabicized word, (K,) from [the Pers\.] زِهْ, signifying “ a bowstring: ” so in the “ Shifá el-Ghaleel. ” (TA.) b2: Also, as is said in the “ Mefáteeh el-'Uloom,”[An astronomical almanac; or a set of astronomical tables;] a book, or writing, containing stellar calculations, year by year: in which sense, likewise, it is an arabicized word, from the Pers\.زِهْ: pl. زِيَجَةٌ. (TA.) b3:  And The science of astronomy, or of the celestial sphere. (TA.) زَائِجَةٌ A four-sided, or round, scheme, made to exhibit the horoscope, or places [or configurations] of the stars at the time of a birth: an astrological term [arabicized from the Pers\. زَايْچَهْ]: so in the “ Shifá el-Ghaleel,” from the “ Mefáteeh el-'Uloom,” by Er-Rázee. (TA.)