from The American Heritage® Dictionary of the English Language, 4th Edition
- Single; one: unicycle.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- one, single
from the GNU version of the Collaborative International Dictionary of English
- A prefix signifying one, once; as in uniaxial, unicellular.
Latin ūni-, from ūnus, one; see oi-no- in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin uni-, combining form of unus ("one"). (Wiktionary)