Periptery

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Periptery \Pe*rip"ter*y\, n. [Gr. ? flying round about.]
     The region surrounding a moving body, such as the wing of a
     bird or a gliding a["e]roplane, within which cyclic or
     vortical motion of the air occur.
     [Webster 1913 Suppl.]