It lies in the form of a trough with its axis running east and west.
The most elaborate discussion only consists in revolving on one's own axis.
L is a loop, the axis of which is straight, while R is one the axis of which is curved or crooked.
The earth revolves on its axis from West to East, so do all the rest.
The only equable motion she has, is her revolution on her own axis.
We will suppose the axis of the sun to be vertical for the sake of simplicity.
The normal direction of the fibers of wood is parallel to the axis of the stem in which they grow.
Further, the sun also rotates on its axis in a period of 26 days.
Movement about an axis persists, but what is in focus constantly changes.
This axis intersects the surface at the north and south poles.
axis 1540s, "imaginary straight line around which a body (such as the Earth) rotates," from L. axis "axle, pivot, axis of the earth or sky," from PIE *aks- "axis" (cf. O.E. eax, O.H.G. ahsa "axle;" Gk. axon "axis, axle, wagon;" Skt. aksah "an axle, axis, beam of a balance;" Lith. aszis "axle"). Fig. sense in world history of "alliance between Germany and Italy" (later extended to include Japan) is from 1936. Original reference was to a "Rome-Berlin axis" in central Europe. The word later was used in ref. to a London-Washington axis (World War II) and a Moscow-Peking axis (early Cold War).