also: トップクオーク
noun
top quark
A fundamental particle in the Standard Model of particle physics; the heaviest of the six quarks.
トップクォークは1995年に発見された。
The top quark was discovered in 1995.
トップクォークは非常に重い素粒子だ。
The top quark is a very heavy elementary particle.
Variant spelling using クオーク instead of クォーク.
Spelling with interpunct, sometimes used for clarity.
Variant with interpunct and クオーク.
Borrowed from English 'top quark'. The term 'top' was chosen as a counterpart to 'bottom' quark, following the naming convention of the third generation of quarks.