Found 2 items, similar to pentoxide.
English → English (WordNet) Definition: pentoxide pentoxide n : an oxide containing five atoms of oxygen in the molecule
English → English (gcide) Definition: Pentoxide Pentoxide \Pen*tox"ide\, n. [Penta- + oxide.] (Chem.) An oxide containing five atoms of oxygen in each molecule; as, phosphorus pentoxide, P2O5. [1913 Webster]