A place where things join, a junction. / A critical moment in time.

(US, slang) A makeshift encampment adjacent to a railroad freight carrier's property where train hoppers/hobos, tramps, or bums congregate while waiting for their outbound train.

(railways) A location where two railroad tracks cross, without switches, as where different roads intersect.

(UK, ethnic slur, derogatory) A black person.

(physics) A device in which the detection of radiation takes place at the depletion junction of a reverse-biased semiconductor junction.

(physics) a weak insulating barrier between two superconductors, used as an ultrafast switch

(physics) A semiconductor rectifying device in which the barrier between the two regions of opposite conductivity (n-type and p-type) type produces the rectification. All solar cells are junction diodes.

(physics) A transistor in which the emitter and collector barriers are formed by p-n junctions between semiconductor regions of opposite conductivity type.

(physics) An interface between a p-type and n-type semiconductor; used to create junction diodes and junction transistors

(genetics) A non-linear strand of DNA where certain cruciform binding proteins can compete for binding.