is it incest?

is it incest when its your adopted uncle who molests, etc…?

i was 6 or 7 at the time and he was 16 or 17….

i remember him always saying that i had ‘sexy legs’. and i remember being in a room with him and i was naked and crying and he was laughing, i cant remember if he was naked but i know his adoptive mom, my step grandmother, came in and started beating him and then it goes blank..

 

is that incest?