Learner's definition of FAMILIARITY. [noncount] 1. : the state of being familiar with something : the state of having knowledge about something â usually + with. His familiarity with local issues helped him during the campaign. The job requires familiarity with current software.
Vastus lateralis. The vastus lateralis muscle is located on the side of the thigh. This muscle is the largest of the quadriceps group (often called quads) which also includes the rectus femoris, the vastus intermedius, and the vastus medialis.
1 It is the most medial of the vastus group of muscles, the others being vastus intermedius and vastus lateralis. 2  The vastus medialis arises medially along the entire length of the femur, and attaches with the other muscles of the quadriceps in the quadriceps tendon.