خَفَا

, (S, K,) aorist يَخْفُو, (S,) verbal noun خَفْوٌ (S, K) and خُفُوٌّ; (ISd, K;) and خَفَى, aorist يَخْفِى, verbal noun خًفْىٌ; (S, TA;) and خَفِىَ, aorist يَخْفَى, verbal noun خَفْىٌ; (Kr, TA;) said of lightning, It flashed, gleamed, or shone, (S, K, TA,) faintly, extending sideways in the adjacent tracts of cloud: when it flashes, gleams, or shines, a little, and then ceases, not extending sideways, it is termed وَمِيضٌ; and when it cleaves the clouds, and extends high, into the midst of the sky, without going to the right and left, it is termed عَقِيقَةٌ: (S, TA:) according to A 'Obeyd, خَفْوٌ signifies the extending of lightning sideways in the tracts of the sky. (TA.)

And خَفَا, (K,) verbal noun خَفْوٌ, (TA,) It (a thing) appeared. (K, TA. [See also خَفِىَ, in article خفى.])