Of a relation or action between two things: Acting or existing without any intervening medium or agency; involving actual contact or direct relation…

Effected or existing without intermediation or intervening agency; immediate.

Not involving intermediate agency; immediate, first-hand; that is a direct result of something. Now chiefly in technical and specialist senses: cf…

Coming immediately before or after in a chain of causation, agency, reasoning, or other relation; immediate, short-term. Frequently in proximate cause…