relation back of amendment
Defined in 1 dictionary — Case Law
Definitions from Case Law
From 241 U.S. 290 - Seaboard Air Line Railway v. Renn · 1916Most cited · 217 citing opinions
If the amendment merely expanded or amplified what was alleged in support of the cause of action already asserted, it related back to the commencement of the action, and was not affected by the intervening lapse of time. But if it introduced a new or different cause of action, it was the equivalent of a new suit, as to which the running of the limitation was not theretofore arrested.