Dune

WAY, BENE GESSERIT: use of the minutiae of observation.

WEATHER SCANNER; a person trained in the special methods of predicting weather on Arrakis, including ability to pole the sand and read the wind patterns.

WEIRDING: idiomatic: that which partakes of the mystical or of witchcraft.

WINDTRAP: a device placed in the path of a prevailing wind and capable of precipitating moisture from the air caught within it, usually by a sharp and distinct drop in temperature within the trap.

Y

YA HYA CHOUHADA: "Long live the fighters!" The Fedaykin battle cry. Ya (now) in this cry is augmented by the hya form (the ever-extended now). Chouhada (fighters) carries this added meaning of fighters against injustice. There is a distinction in this word that specifies the fighters are not struggling for anything, but are consecrated against a specific thing—that alone.

YALI: a Fremen's personal quarters within the sietch.

YA! YA! YAWM!: Fremen chanting cadence used in time of deep ritual significance. Ya carries the root meaning of "Now pay attention!" The yawm form is a modified term calling for urgent immediacy. The chant is usually translated as "Now, hear this!"

Z

ZENSUNNI: followers of a schismatic sect that broke away from the teachings of Maometh (the so-called "Third Muhammed") about 1381 B.G. The Zensunni religion is noted chiefly for its emphasis on the mystical and a reversion to "the ways of the fathers." Most scholars name Ali Ben Ohashi as leader of the original schism but there is some evidence that Ohashi may have been merely the male spokesman for his second wife, Nisai.