Y-M – ‘accumulation of mass’

3220. yam, yawm; from an unused root meaning to roar;

YM The sign of manifestation united to that of exterior action as collective sign, composes a root whose purpose is to indicate universal manifestation and to develop all ideas of mass and accumulation.

In a literal and restricted sense, the sea; that is to say, the universal aqueous manifestation, the mass of waters. (The Hebraic Tongue Restored, Fabré d’Olivet, p. 365)