intermediate
noun
a substance formed during a chemical process before the desired product is obtained
verb
act between parties with a view to reconciling differences
“He interceded in the family dispute”
“He mediated a settlement”
adjective
lying between two extremes in time or space or state
“going from sitting to standing without intermediate pushes with the hands”
“intermediate stages in a process”
Oppositesterminalaround the middle of a scale of evaluation
“an orange of average size”
“intermediate capacity”
Source: WordNet 3.1, Princeton University