third conditional

Noun

 * 1)  A structure used to talk about unreal or unfulfilled events in the past, containing an "if" clause (with a verb in the past perfect) and a main clause (with would + the bare perfect infinitive of a verb).
 * "If Columbus hadn't discovered America, he wouldn't have been famous" is an example of the third conditional.

Coordinate terms

 * zero conditional
 * first conditional
 * second conditional
 * mixed conditional