noun
chopping finely; slicing up finely
The action of cutting something into small pieces, often used in cooking.
野菜の細切りは料理の基本です。
Chopping vegetables finely is a basic cooking skill.
このサラダには人参の細切りが入っています。
This salad contains fine strips of carrot.
みじん切り means mincing into very fine pieces, while 細切り refers to cutting into thin strips or small pieces, not necessarily as fine as mincing.
Compound of 細 (こま, 'fine, small') and 切り (きり, 'cutting', from 切る).