صدء

صَدَأٌ ذ inf. n. of صَدِئَ [q. v.]. (S, M.) ― -b2- Also [a subst.] signifying The rust of iron, (S, M, * TA,) and of copper and the like. (Har p. 481. [But there erroneously written صداآء.]) -A2- Also A man slender in body; (K, TA;) light, or active, therein: its ء is said to be substituted for ع. (TA. [See صَدَعٌ; and see also صَدًى.])