I was reading a autobiography online, and in that context , I come across a phrase
"she was survived by her partner,.....(partner's name)"
what does the author mean to say?
When you say "someone was survived by so-and-so", it means that that someone is deceased, and their surviving relatives are so-and-so.
Here, it means "her partner X was still alive when she died."
If you see:
He was 43 and is survived by his wife, a son and daughter.
then that means he died while those family members are still alive.