Search Result for "pentoxide": 
Wordnet 3.0

NOUN (1)

1. an oxide containing five atoms of oxygen in the molecule; 



The Collaborative International Dictionary of English v.0.48:

Pentoxide \Pen*tox"ide\, n. [Penta- + oxide.] (Chem.)
   An oxide containing five atoms of oxygen in each molecule;
   as, phosphorus pentoxide, P2O5.
   [1913 Webster]


WordNet (r) 3.0 (2006):

pentoxide
    n 1: an oxide containing five atoms of oxygen in the molecule