What does agamous mean?
Agamous is an adjective used chiefly in the biological sciences to describe reproduction that takes place without the fusion of gametes — that is, without sexual union. An organism described as agamous produces offspring asexually, whether through budding, fragmentation, spores, or other vegetative means. The term derives from Greek roots meaning 'without marriage,' a fitting metaphor for life cycles that bypass mating entirely. It appears most often in discussions of fungi, plants, and certain animals such as aphids, which can alternate between sexual and asexual generations. Because it is a specialist term, agamous rarely surfaces outside textbooks, research papers, and technical writing, but within those contexts it offers a precise alternative to the broader word 'asexual.' Its antonymic counterpart is sexual or gametic reproduction, in which genetic material from two parents combines.
adjectiveRelating to or characterized by reproduction without the fusion of gametes; asexual. In botany and zoology, describes organisms or reproductive processes that occur without sexual union.
- Reproducing or capable of reproducing without sexual union; asexual.
- (Of flowers or plant parts) lacking distinct sexual organs.
"Certain fungi are agamous, spreading entirely through spores without any sexual reproduction."
"Aphids can switch between sexual and agamous generations depending on the season."
"In some mosses, agamous propagation by fragmentation allows colonies to spread across bare rock."
The Greek root of 'agamous' literally means 'unmarried' — biologists borrowed a word about matrimony to describe life that skips mating altogether.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of agamous
Agamous comes from the Greek 'agamos,' formed from the prefix 'a-' (without) and 'gamos' (marriage), so its literal sense is 'unmarried' or 'without union.' The word entered scientific English in the nineteenth century as biologists sought precise terminology for modes of reproduction, borrowing freely from Greek to do so. It shares its root with a family of English words built on 'gamos,' including gamete, monogamy, polygamy, and bigamy.
How agamous is actually used
Primarily a technical term used in biology, botany, and zoology; rarely encountered in everyday conversation. It carries no emotional connotation and is neutral in register.
Easily confused with agamous
Monogamous refers to having one mate at a time, whereas agamous refers to reproduction occurring without any sexual union at all.