This page offers definitions and phrases of various Erectile Dysfunction related terms. If you can not find in this glossary the definition you need, please contact us using this form.Reset list
Radial rigidity - Rigidity across the width or radius of the penis.
Radiation therapy - Administration of radiation to treat a disease.
Radical prostatectomy - A surgical procedure for prostate cancer in which the entire prostate and seminal vesicles, and part of the vas deferens, are removed.
Randomized - The process of assigning patients to different forms of treatment in a research study in a random manner.
Red blood cells - The cells in the blood that carry oxygen to the tissues.
REM (rapid eye movement) - A phase in the sleep cycle. Nocturnal erections occur during this phase of sleep.
Resistance - Opposition to blood flow out of the penis.
Retrograde ejaculation - A condition whereby the ejaculate passes backward into the bladder instead of forward out the tip of the penis; frequently occurs after TURP.
Retroperitoneal lymph node dissection - A procedure to remove lymph nodes adjacent to the site of testicular or prostate cancer.