junction

noun

• 1a point where two or more things are joined:the junction of the two rivers
• a place where two or more roads or railway lines meet: the junction of Queen’s Road and Lancaster Avenue [with modifier]:accidents happen at road junctions

• 2 Electronics a region of transition in a semiconductor between a part where conduction is mainly by electrons and a part where it is mainly by holes.

• 3 [mass noun] the action or fact of joining or being joined: the vena cava is formed by the junction of three veins the junction of two roundels produces a triangular space