An orgasm is a peak feeling of intense pleasure in response to stimulating sexual activity. Vaginal penetration during sex indirectly stimulates the clitoris. But this may not be enough stimulation for orgasm. Many women may also need direct manual or oral stimulation of the clitoris to reach orgasm. Anorgasmia, or female orgasmic disorder, is defined as experiencing any of these in a significant way: 
Delayed orgasm
Absence of orgasm
Fewer orgasms
Less-intense orgasms
 Anorgasmia can also be: 
Lifelong, if you've never had an orgasm
Acquired, if you have new problems with having orgasms
Situational, if you have problems with orgasm only in certain situations, with certain kinds of stimulation or with certain partners
Generalized, if you have problems with orgasm in any situation
 Women who don't always reach orgasm during sexual encounters may not find it distressing. In that case, the lack of an orgasm is not considered a disorder.