1. One that is in a middle position or state.
2. An intermediary.
3. Chemistry A substance formed as a necessary stage in the manufacture of a desired end product.
4. An automobile that is smaller than a full-sized model but larger than a compact.
intr.v. (- t ) in ter me di at ed, in ter me di at ing, in ter me di ates
1. To act as an intermediary; mediate.
2. To intervene.