Final answer:
The legal term for touching another person without their permission is 'battery'. It is classified under tort law and includes intent, harmful or offensive contact, and lack of consent.
Step-by-step explanation:
Touching another person without their permission is legally known as battery, which is defined under the category of tort law. Battery is considered an intentional tort, which occurs when an individual intentionally and voluntarily brings about a harmful or offensive contact with another person. The essential elements to prove a battery claim typically include intent, harmful or offensive contact, and lack of consent.
It's important to note that harmful contact is not necessary for a battery charge; even offensive or unwanted contact can be grounds for a lawsuit or criminal charge, depending on the jurisdiction.