, the Coptic ϫⲱϫ, a head (or rather top of the head), as in the Latin vertex, akin to vortex, from the same root as vertere. The sign
, which in later texts often appears as the determinative, has its origin in the cursive form of
carelessly written. Instead of
we also find
, which is certainly not phonetic but ideographic of enclosure, as in the word