Weak ejaculation refers to a reduction in the amount of semen a person ejaculates or a reduction in the pressure of the ejaculation.

Low semen volume can be caused by a variety of factors, including dehydration, certain medications, hormonal imbalances, prostate issues, and certain medical conditions like retrograde ejaculation or obstructive azoospermia. Lifestyle factors such as smoking, excessive alcohol consumption, and poor diet can also contribute to decreased semen volume.

If you're concerned about this issue, it's a good idea to consult a healthcare professional for an accurate diagnosis and appropriate guidance.