interdefinable

As a noun terms

is .

As an adjective interdefinable is

(logic|philosophy) that can be defined in terms of each other.

As an adjective interdefinable

is (logic|philosophy) that can be defined in terms of each other.

As a noun interdefinability is

the property of being interdefinable.

As a verb define

is to determine with precision; to mark out with distinctness; to ascertain or exhibit clearly.

As a noun define

is a kind of macro in source code that replaces one text string with another wherever it occurs.

As an adjective interdefinable is

that can be defined in terms of each other.