زَلْزَالٌ

[Motion, commotion, agitation, convulsion, or violent motion; and particularly an earthquake, or a violent earthquake;] a subst. from R. Q. 1: (Zj, S, Msb:) or a verbal noun of R. Q. 1, as also زِلْزَالٌ and زُلْزَالٌ and ↓ زَلْزَلَةٌ [which last is often used as a simple subst., as such having for its plural زَلَازِلُ, and is explained in Jel xxii. 1 as signifying a violent earthquake]. (K.)