Ronda Rousey became the first female fighter EVER inducted into the UFC Hall of Fame on Thursday -- and proudly told the crowd, "We have changed what it means to fight like a girl."
She's the UFC's first-ever women's champion and defended her belt SIX TIMES during her historic run from 2012 to 2015 ... and, during her speech, thanked the fans for their support.
"Because of you, I am the first woman standing up here accepting this incredible honor," Rousey said ... "May I be the first of many."
"I look around and think, together we built this.