قسط
قسطس
قسقس
قُسْطَاسٌ
قُسْطَاسٌ and قِسْطَاسٌ A balance, or instrument for weighing: (Ṣ, Mṣb, Ḳ; and Bḍ in xvii. 37:) or the most even and most just kind thereof: or such as is just, of whatever kind it be: (Ḳ:) or i. q. قَبَّانٌ [a steelyard]: or, as Lth thinks, the iron of the قبّان: or i. q. شَاهِينٌ [the beam of a balance]: (TA:) or i. q. فَرَسْطُونٌ [an arabicized Persian word, signifying a public standard of weights or measures]: (Zj, TA:) also written قصطاس: (Ḳ:) said to be Arabic, from القِسْطُ, meaning “justice:” (Mṣb:) or a Greek word arabicized; (IDrd, Mṣb, Ḳ;) and its being so does not impugn the truth of the Ḳur-án's being [altogether] Arabic; for when a foreign word is used by the Arabs, and made by them conformable with their language in respect of desinential syntax and determinateness and indeterminateness and the like, it becomes Arabic: (Bḍ, ubi supra:) pl. قَسَاطِيسُ. (Mṣb.)