What does semen mean?
Semen is the reproductive fluid released during ejaculation. It contains sperm cells as well as secretions produced by the seminal vesicles, prostate, and other glands. In medical and laboratory settings, semen may be examined to assess sperm count, motility, morphology, and possible fertility problems. The word is relatively direct and clinical rather than euphemistic, although in general conversation people may refer more vaguely to the fluid or use a less precise everyday term. A second, older sense connects semen with a seed, reflecting its Latin ancestry and its traditional use in botanical language. That historical connection makes the word useful beyond its anatomical meaning: it links human reproduction with the broader biological idea of seeds, origins, and potential new growth.
nounThe viscous reproductive fluid produced during ejaculation, containing sperm together with fluids from the seminal vesicles, prostate, and other glands. In botanical and archaic usage, the word can also mean a seed.
- The reproductive fluid released during ejaculation, which contains sperm and secretions from accessory glands.
- A seed or seed-like reproductive body, especially in botanical or archaic usage.
"The laboratory analyzed the semen for sperm count, motility, and abnormal forms."
"Fertility testing commonly begins with a semen analysis."
"In older botanical writing, semen referred to the seed from which a new plant might grow."
Semen is usually treated as a mass noun; the plural semina is rare and occurs chiefly in specialized or formal writing.
"The samples were stored separately before the semina were examined."
From the Latin word for “seed,” semen arrived with a double life: it names both a reproductive fluid and, in older botanical usage, the beginning of new growth.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does semen come from?
Semen derives from Latin sēmen, meaning “seed,” a noun formed from serere, “to sow.” Latin sēmen was also used for the male reproductive fluid, and English borrowed the word with that anatomical sense. English derivatives such as seminal, seminar, and seminary continue to reflect the shared idea of a seed or source.
Related word forms
How semen is actually used
In contemporary English, semen is chiefly an anatomical or clinical term. It is normally treated as a mass noun, though the plural semina occurs in specialized writing.
Easily confused with semen
Sperm refers to the male reproductive cells, whereas semen is the complete fluid that transports them.
Seamen means sailors, while semen is the reproductive fluid; the two are pronounced alike but have different meanings and spellings.