This is the 9864th most frequent Russian word.
автономном
"Автономном" means "autonomous."
'автономном режиме' refers to an independent, self-sufficient state of being, metaphorically used here.
Он живет в автономном режиме, потому что не любит зависеть от других.
He lives in an autonomous mode because he doesn't like to depend on others.
'автономном округе' refers to an administratively autonomous zone, a specific geographical area with autonomy.
В этом автономном округе проживает много коренных народов.
In this autonomous region, many indigenous peoples live.
'автономном режиме' here pertains to an object's functional ability to operate independently.