Metaphysical meaning of Japheth (mbd)
Japheth, ja'-pheth (Heb.)--extended and wide; widespread; latitude; increase; expansion; unfoldment; absolute extension; infinite space; extends without limitation.
One of Noah's three sons (Gen. 5:32).
Meta. The intellect or reason, the mental realm. To extend without limitation it would have to enter into the spiritual. Noah's three sons, Shem, Ham, and Japheth, refer to the spiritual, the physical, and the mental in man.