Phrase Hound found 19 phrases and 20 compound words that contain helium. The most common are listed below. Open helium in the live search for definitions, filters, and the full list.
Phrases 19
- helium balloonsplural of helium balloon: A balloon that is filled with helium gas and rises up into the air if manually released.
- helium starA star which has lost most or all of its hydrogen, leaving just a core of helium.
- helium flashThe sudden beginning of the burning of helium in the core of stars of intermediate mass or on the surface of an accreting white dwarf.
- helium fusionnuclear fusion involving helium nuclei.
- helium hydrideEllipsis 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 burningthe nucleosynthesis process, in stars with temperatures over 10⁸K, in which helium is converted to carbon and then to oxygen, neon and magnesium
- helium balloonA balloon that is filled with helium gas and rises up into the air if manually released.
- helium datinga method of determining the age of rock that depends on the production of helium during the radioactive decay of isotopes of uranium and thorium.
- helium speechSpeech 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.
- helium variableA star in which the strength of the helium absorption lines vary periodically; at times appearing to be a helium star.
- liquid heliumThe liquified form of helium that does not solidify even at absolute zero; it shows unusual properties, such as superfluidity, due to quantum effects.
- antiprotonic heliumA form of helium where one of the electrons is replaced by an antiproton.
- helium flashesplural of helium flash: The sudden beginning of the burning of helium in the core of stars of intermediate mass or on the surface of an accreting white dwarf.
- helium starsplural of helium star: A star which has lost most or all of its hydrogen, leaving just a core of helium.
- helium variablesplural of helium variable: A star in which the strength of the helium absorption lines vary periodically; at times appearing to be a helium star.
- helium descramblerAn 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.
- helium descramblersplural of helium descrambler: 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 …
- helium unscramblerSynonym of helium descrambler: 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 …
- helium unscramblersplural of helium unscrambler: 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 …
Compound words 20
- antiheliumThe antiatom form of helium
- helioxA mixture of helium and oxygen used as a breathing gas.
- heliumideSynonym of helide: A binary compound of helium and another element.
- heliumlessWithout helium; not requiring helium.
- hyperheliumA nuclear complex formed from a helium nucleus by replacement of a neutron by a hyperon
- diheliumTwo helium atoms in a molecule.
- heliairA mixture of helium, nitrogen and oxygen, used as a breathing gas instead of normal air.
- helideA binary compound of helium and another element.
- helioniumAny atomic system containing a helium nucleus and an antihelium nucleus.
- heliumlikeHaving the electronic structure of a helium atom