scattering n.

mid-12c., scateren, transitive, "to squander;" c. 1300, "to separate and drive off in disorder;" late 14c., "to throw loosely about, strew here and there," possibly a northern English variant of Middle English schateren (see shatter), reflecting Norse influence. The intransitive sense, "go or flee in different directions, disperse" is from c. 1300. As a noun from 1640s, "act or action of scattering;" by 1950 in reference to radio waves.