Contact.
ETYM Latin junctio, from jungere, junctum, to join: cf. French jonction. Related to Join.
1. A act of adjoining things; SYN. adjunction.
2. Something that joins or connects; SYN. conjunction.
3. The place where two things come together.
4. The state of being joined; SYN. conjunction.
The point in a thermocouple where the two dissimilar metals are joined.