What does monoecious mean?
Monoecious describes an organism that has both male and female reproductive organs on the same individual. The term is used most often in botany for plants that produce separate male and female flowers on one plant, such as maize. A monoecious species differs from a dioecious species, in which male and female reproductive organs occur on separate individuals. This distinction is important in plant reproduction because it affects pollination, breeding, and the cultivation of crops. The word comes from Greek roots meaning “single” and “house,” an apt reference to male and female structures sharing one dwelling. Although “monoecious” may sound technical, it expresses a useful biological contrast that helps distinguish reproductive arrangements within and between species.
adjectiveDenoting a plant or organism that bears both male and female reproductive organs on the same individual. In botany, it refers especially to a species whose male and female flowers occur on the same plant.
- In botany, bearing separate male and female flowers on the same individual plant.
- More broadly, bearing both male and female reproductive organs on the same individual.
"A monoecious plant can produce both male and female flowers without needing a separate pollinating plant."
"The maize plant is monoecious, with male tassels and female ears developing on the same individual."
"Unlike a dioecious species, a monoecious organism can reproduce through both male and female structures on one body."
One plant, two kinds of flowers: monoecious species combine the male and female reproductive structures on the same plant.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does monoecious come from?
The word was formed in the 19th century from Greek monos, meaning “single,” and oikos, meaning “house,” together conveying the idea of male and female reproductive organs sharing one individual. Its sense developed through biological terminology, especially botany, where it describes plants bearing both kinds of unisexual flower. Related English words such as monarchy, monopoly, monogamy, and monologue share the Greek element monos, meaning “single” or “one.”
Related word forms
How monoecious is actually used
This is chiefly a botanical term, though it can be used more broadly in biology. It describes the arrangement of reproductive organs rather than the everyday sexual identity of people.
Easily confused with monoecious
Monoecious organisms bear male and female reproductive organs on one individual, whereas dioecious organisms have separate male and female individuals.