Sentence:  By repeating this process several times before <WSD>ejaculation</WSD> and by practicing this procedure, the man will learn to control his <WSD>ejaculation</WSD>. 
Meaning of the word marked with <WSD> tags:  A reflex in human beings and other mammals in response to sexual stimulation involving the forcible ejection from the urethra of, in males, semen; and, in females, vaginal fluid.