سطح

sat̤ḥ, vulg. sat̤aḥ(inf. n. of سطح 'to spread,' etc.), s.f. Expanse; platform, terrace, flat roof (of a house)surface; (in Geometry) superficies, a plane:—sat̤ḥ-ě-mu tawāziyu`laẓlā`, s.f. A parallelogram:—sat̤ḥ-ě-muḥaddab berūnī, s.f. Convex surface:—sat̤ḥ-ě-mustawīor sat̤ḥ-ě-hamwār, s.f. A flat or level surface; a plane superficies.