ypsilon
[ ŭp′sə-lŏn′, yōōp′- ]
n.
Variant ofupsilon
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Examples from the Web for ypsilon
Ypsilon's big Greek letter, outlined in perpetual snow, is one of the famous landmarks of the northern end.
The Book of the National Parks|Robert Sterling YardOne of the commonest species is the cosmopolitan greasy-cut-worm (Agrotis ypsilon).
Garden Pests in New Zealand|D. MillerThis species is the ypsilon of Borkhausen, and the upsilon of other authors.
The Moths of the British Isles, Second Series|Richard SouthThis accounts for the presence of v, originating in the Greek ypsilon.
The English Language|Robert Gordon Latham