Helium-3
noun
noun ·Rare ·Advanced level
Definitions
Noun
- 1 The rare isotope of helium, ³₂He, that has a single neutron. uncountable
"With its magnetic field drastically weakened and much of its atmosphere lost, what remains intact of H-047c's surface is vulnerable to cosmic radiation. This has rendered the soil unable to support life, though it is a potential source of valuable helium-3."
Example
More examples"With its magnetic field drastically weakened and much of its atmosphere lost, what remains intact of H-047c's surface is vulnerable to cosmic radiation. This has rendered the soil unable to support life, though it is a potential source of valuable helium-3."
More for "helium-3"
Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.