vo

from The Collaborative International Dictionary of English v.0.48
Vanadyl \Van"a*dyl\, n. [Vanadium + -yl.] (Chem.)
   The hypothetical radical {VO}, regarded as a characteristic
   residue of certain vanadium compounds.
   [1913 Webster]
from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)
VO
       Virtual Organization (grid)
antiflux / dictionary / vo
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