noun
magnetic monopole
A hypothetical particle in physics that carries a single magnetic charge (north or south), unlike ordinary magnets which always have both poles.
磁気単極子はまだ実験的に確認されていない。
Magnetic monopoles have not yet been experimentally confirmed.
Katakana loanword for 'monopole', used in the same physics context but less formal than 磁気単極子.
Compound of 磁気 (magnetism) + 単極子 (monopole), a calque from English 'magnetic monopole'.