Semen

**Semantic type:** Body Substance

**Definition:** The thick, whitish secretion of the male reproductive organs. It is composed of spermatozoa in their nutrient plasma, secretions from the prostate, seminal vesicles, and various other glands, epithelial cells, and minor constituents.

**Synonyms:** - Human Semen (Sperm) - SEMEN - Seminal Plasma - semen