Meaning of “predecessor” - Learner’s Dictionary

predecessor

noun [ C ] uk us /ˈpriːdɪˌsesər/ US  /ˈpredəsesər/
PERSON

the person who was in a job or position before:

He seems a lot better than his predecessor.
THING

something that existed before another, similar thing:

The predecessors to these computers were much larger and heavier.

(Definition of “predecessor” from the Cambridge Learner’s Dictionary © Cambridge University Press)