Organisamen

Organisamen is a neologism used in some discussions of biology and philosophy to describe a functionally integrated unit that emerges from the interactions of multiple organisms with their abiotic environment and that behaves as a single, cohesive system. The term emphasizes coordination and interdependence across components and is sometimes applied to holobionts, superorganisms, and other multi-species assemblages when they are viewed as a unified functional entity. It is not a formal taxonomic category, and its definition varies among authors.

In practice, an organisamen is described as having tight coupling among its parts, shared metabolic or signaling networks, and emergent properties such as homeostasis, division of labor, or collective resilience. It is intended to be distinct from a single organism, which is typically genetically cohesive, and from an ecosystem, which is usually defined by interactions among organisms and their environment across space rather than as a single unit.

The concept appears in debates within evolutionary theory, systems biology, and synthetic biology, where researchers consider whether natural or artificial units comprising multiple organisms and abiotic factors can be treated as targets of selection or analysis at a higher level of organization. Critics contend that imprecise boundaries and variable definitions limit its usefulness, and they often prefer terms such as holobiont, superorganism, or ecosystem for describing specific cases.

See also: holobiont, superorganism, ecosystem, systems biology, emergent properties.