First, I am sorry that this happened to you and know that it was not your fault.
Second, whether it is specifically rape, sexual assault or sexual abuse would probably be defined by the state in which you lived at the time of the abuse. I am not an attorney so I am not all that familiar with the terminology for this.
If you have not already talked to a therapist you should consider it. There are different feelings that people experience after this happens. For me I first felt shame but now I feel anger.
I hope you find the support you seek here at psychcentral.