| Hydrogenium | n. [ NL. See Hydrogen. ] (Chem.) Hydrogen; -- called also in view of its supposed metallic nature. Graham. [ 1913 Webster ] |
| Carbon, hydrogen, oxygen, nitrogen, phosphorus... and sulphur. | Carboneum, Hydrogenium, Nitrogenium, Phosphor, Oxygenium und... Schwefel. Les passagers (1999) |
| Hydrogenium | n. [ NL. See Hydrogen. ] (Chem.) Hydrogen; -- called also in view of its supposed metallic nature. Graham. [ 1913 Webster ] |