Found 2 items, similar to HO.
English → English (WordNet) Definition: Ho Ho n : a trivalent metallic element of the rare earth group; occurs together with yttrium; forms highly magnetic compounds [syn: holmium, atomic number 67]
English → English (gcide) Definition: HO Hydroxyl \Hy*drox"yl\, n. [Hydro-, 2 + oxygen + -yl.] (Chem.) A compound radical, or unsaturated group, HO, consisting of one atom of hydrogen and one of oxygen. It is a characteristic part of the hydrates, the alcohols, the oxygen acids, etc. [1913 Webster]