Meaning of “dictate” - Learner’s Dictionary

dictate

verb uk us /dɪkˈteɪt/
SAY [ I, T ]

to say or read something for someone to write down:

Tony was busy dictating letters to his secretary.
DECIDE [ T ]

to decide or control what happens:

[ + question word ] The weather will dictate where we hold the party.

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