noun
sexual urge; sexual impulse
A neutral, clinical term for the biological or psychological drive toward sexual activity.
思春期には性衝動が高まることがある。
Sexual urges can increase during adolescence.
性欲 is a more common, everyday word for sexual desire or libido, while 性衝動 is more clinical and emphasizes the impulsive, drive-like aspect.
Compound of 性 (sei, 'sex, gender') and 衝動 (shōdō, 'impulse, urge').