💡 Words with a Similar Meaning to "Helium star"
Found via reverse dictionary — words that share a conceptual meaning.
| Word | Definition |
|---|---|
| dwarf starnoun | (astronomy) A star that is located in the main sequence in the Hertzsprung-Russell diagram, though generally excluding the small minority which fall in the blue band due to their large size and high luminosity; fuses hydrogen into helium in its core. |
| helionnoun | (physics, usually) A helium-3 ion, the nucleus of a helium-3 atom. Formula: ³He⁺². |
| 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. |
| heliumidenoun | Synonym of helide. |
| 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. |
| helium speechnoun | Speech whose timbre (but not pitch) has been affected by the inhalation of helium, due to the difference in the speed of sound in that gas, compared with air. |
| astrosheathnoun | (astronomy) The stellar equivalent of the heliosheath |
| heliairnoun | (underwater diving) A mixture of helium, nitrogen and oxygen, used as a breathing gas instead of normal air. |
| hydridoheliumnoun | Synonym of helium hydride. |
| heliosheathnoun | (astronomy) A zone between the termination shock and the heliopause, in the heliosphere, at the outer border of the Solar System, where the solar wind is dramatically slower than within the termination shock. |
| heliopausenoun | (astronomy) The boundary of heliosphere where the Sun's solar wind is stopped by the interstellar medium. |
| helionautnoun | (science fiction, rare) Someone who travels to the Sun; an explorer of the Sun. |
| heliospherenoun | (astronomy) The region of space where interstellar medium is blown away by solar wind; the boundary, heliopause, is often considered the edge of the Solar System. |
| helium descramblernoun | (technical diving, saturation diving, underwater diving) An electronic device that lowers the pitch of speech, to compensate for the high-pitched speech of someone breathing in a helium atmosphere mixture (e.g. heliox or heliair), so as to be understandable to other people. |
| herbig-haro objectnoun | (astronomy) a small, bright knot of nebular emission in a dark, interstellar cloud of gas and dust; thought to be mass ejected from a young star. |
| heavy hydrogennoun | Synonym of deuterium. |
| parahydrogennoun | (physics) The form of the hydrogen molecule (H₂) in which the two nuclei have antiparallel spin; about 25% of hydrogen at room temperature. |
| hydrogeniumnoun | (obsolete) Hydrogen, especially when formerly considered as a metal. |
| black holenoun | (physics) A region of spacetime that exerts a gravitational pull strong enough that no matter or energy, not even light, can escape it. |
| 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).] |
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