What qualifies as a "nympho"?

My husband and I have been married for a year now and we have 2 kids, yet we ALWAYS make time for sex whether its a 5min quickie or an all nighter. We havent slowed down at all (I'm surprised he can keep up) but I've always loved sex....like a LOT. On average we have sex about 9 times a week or more, almost always before bed and again before I leave for work in the morning.....I dont get tired of it and I still have energy for other things....But I noticed talking to other friends I have WAY more sex than the average joe (Been this way since highschool) and I dont need it, I can go without if need be. But what qualifies as a nympho? I dont think I am one, but both my ex bf's called me that and I've only been with 3 men my entire life....