In American society, most people take on the last name of their father at their birth. This kind of system is known as what?

I've seen someone ask this question on a different site and had wanted to answer them.

I thought I had the term. Does it start with an "a?"

Thanks for the help:-)

patralineal

Thanks PcyDAG

Yes, you are correct! The system where individuals take on the last name of their father at birth is known as "patrilineal naming" or "patrilineal surname inheritance." In this system, children inherit their father's surname as their last name. It is commonly practiced in many cultures and societies, including American society. So, the term you are looking for does start with an "a," but it is actually "patrilineal naming" rather than a different term. I hope this explanation helps you provide an accurate answer to the person asking the question!