Blood contains many proteins called clotting factors that can help to stop bleeding. People with hemophilia have low levels of either factor VIII (8) or factor IX (9). The severity of hemophilia that a person has is determined by the amount of factor in the blood. The lower the amount of the factor, the more likely it is that bleeding will occur which can lead to serious health problems.
Definition of hypnosis for English Language Learners. : a state that resembles sleep but in which you can hear and respond to questions or suggestions.
The English word  hypnosis  is derived from his name, referring to the fact that when hypnotized, a person is put into a sleep-like state (hypnos sleep + -osis condition). The class of medicines known as  hypnotics  which induce sleep also take their name from Hypnos.