olemus
(1) klient-server-süsteemis: tavaline ühenduse loomise viis,
klient loob ühenduse serveril avatud pordi kaudu
= the connection method where a client connects to a server through the server's open port

(2) elektrimootori ühendusviis
= the type of connection that defines the primary direction of rotation of a electric motor
http://www.industrial-electronics.com/images/imc7e_29-1.jpg
(up: forward, down: reverse)

vt ka
- pöördühendus