سيوسِيَةٌ The curved part of each of the two extremities of a bow: pl. سِيَاتٌ: (S, K:) the ة in the sing. is a substitute for و: AO says that Ru-beh used to pronounce it [سِئَةٌ,] with ء; and the rest of the Arabs, [سِيَةٌ,] without ء. (S, TA.) [See also art. سأو.]سَىٌّ: see art. سوى.سِىٌّ, with the compound سِيَّمَا: see art. سوى. b2:  [Hence, perhaps, because of its uniformity, and, if so, belonging to art. سوى,] كَلَأٌ سِىٌّ Much, or abundant, herbage: mentioned by Sgh. (TA.) سِيَّةٌ: see art. سوى.سِيَوِىٌّ Of, or relating to, the سِيَة of a bow. (S.)