(anthropology) The child of one's father's brother or of one's mother's sister; a cousin related via same-gender siblings rather than opposite-gender ones (the latter being a cross-cousin).

(quantum mechanics) A surprising result of applying the Dirac equation to the problem of electron scattering from a potential barrier. In non-relativistic quantum mechanics, electron tunnelling into a barrier is observed, with exponential damping. However, if the potential is of the order of the electron mass, V∼mc², the barrier is nearly transparent; moreover, as the potential approaches infinity, the reflection diminishes and the electron is always transmitted.

The linguistic paradox that, if there are unnameable things, their existence cannot be indicated without naming them in some way.

(economics) The apparent paradox that a rent seeker wanting political favours can bribe politicians at a cost much lower than the value of the favour to the rent seeker.

(uncountable, skiing) A discipline of alpine snowboarding, a variant of giant slalom. A sport where two snowboarders compete head to head on parallel identical giant slalom courses.

(uncountable, skiing) A discipline of alpine skiing, a variant of slalom. A sport where two skiers compete head to head on parallel identical slalom courses.

Alternative form of morphoparadigm

(physics) The black hole information paradox.

Synonym of paradox of thrift

plural of parabolic cup