Transitional.
Temporary.
A transitional or temporary period between other events.
Making a transit or passage.
Affected by transference of signification.
Taking a direct object or objects.
Having the property that if an element a is related to b and b is related to c, then a is necessarily related to c.
Such that, for any two elements of the acted-upon set, some group element maps the first to the second.
Such that, for any two vertices there exists an automorphism which maps one to the other.
A transitive verb.