prettygoodword: text: words are sexy (Default)
prettygoodword ([personal profile] prettygoodword) wrote2007-01-25 07:24 am

annulus

annulus - n., a ring-shaped figure, such as a tree-ring or the space between two concentric circles in a plane.


Or possibly also a toroidal figure. And definitely also the veil remnant on a mushroom stalk. From Latin ānulus, finger ring, diminutive of ānus, ring.

---L.