A reproductive system in plants or animals where some individuals have both male and female organs while others have only one sex.
From Greek koinos (common) + dioikos (two houses) + -ism (condition), combining the concept of shared traits with separate sexes, created to describe intermediate reproductive strategies.
Some plants can't decide if they want to be male or female, so they split the difference—some flowers in the population go full hermaphrodite while others stay single-sex, which is nature's pragmatic approach to reproduction.
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