💡 Words with a Similar Meaning to "Helion"
Found via reverse dictionary — words that share a conceptual meaning.
| Word | Definition |
|---|---|
| heliumnoun | (uncountable) The second-lightest chemical element (symbol He), with an atomic number of 2 and atomic weight of 4.002602, a colorless, odorless and inert noble gas. |
| helium hydridenoun | (inorganic chemistry) Ellipsis of helium hydride cation, the unstable binary cation HeH⁺ present in interstellar space; it is the strongest acid, reactive with every chemical species except positive ions, including electrons. |
| heliumidenoun | Synonym of helide. |
| hydridoheliumnoun | Synonym of helium hydride. |
| hydrionnoun | (dated, chemistry, physics) proton (positive hydrogen ion) |
| hydrogen ionnoun | (chemistry) Used other than figuratively or idiomatically: see hydrogen, ion.: H⁻ or H⁺ |
| hydronnoun | (chemistry) any hydrogen cation, e.g. a proton (¹H⁺) |
| halonucleusnoun | Alternative spelling of halo nucleus. [(nuclear physics) An atomic nucleus whose radius is appreciably larger than that predicted by the liquid drop model (wherein the nucleus is assumed to be a sphere of constant density).] |
| hydroniumnoun | (inorganic chemistry, physical chemistry) The hydrated hydrogen ion, H₃O⁺. |
| helionautnoun | (science fiction, rare) Someone who travels to the Sun; an explorer of the Sun. |
| helium starnoun | (astronomy) A star which has lost most or all of its hydrogen, leaving just a core of helium. |
| heliologistnoun | One who studies heliology. |
| helioxnoun | (medicine, underwater diving) A mixture of helium and oxygen used as a breathing gas. |
| hydrogeniumnoun | (obsolete) Hydrogen, especially when formerly considered as a metal. |
| hydrogennoun | The lightest chemical element (symbol H), with an atomic number of 1 and atomic weight of 1.008. |
| hydroxoniumnoun | (chemistry) The cation obtained by reacting a proton with water - H₃O⁺; hydronium. |
| heliairnoun | (underwater diving) A mixture of helium, nitrogen and oxygen, used as a breathing gas instead of normal air. |
| parahydrogennoun | (physics) The form of the hydrogen molecule (H₂) in which the two nuclei have antiparallel spin; about 25% of hydrogen at room temperature. |
| helionoun | A heliotrope (surveying instrument). |
| hydrogen-1noun | Synonym of protium (“most common isotope of hydrogen”). |
📝 Common Phrases with "Helion"
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