I found this sentence as a definition for a word in the Cambridge dictionary:
"To visit someone in their home"
But I've looked up the word someone and I found that it is singular, so my question is:
Why is "someone" used in the sentence above with their and NOT with his/her?
Update #1
I've seen the link here and found about "singular they", but I'm not sure if that is the answer for my question. Please, can someone tell me if the "singular they" is the reason it's used "their" with "someone"?