inviáveis

Inviáveis is the plural form of inviável, an adjective in Portuguese that indicates something is not viable: it cannot occur, develop, or be sustained under given conditions. The term is used across fields such as biology, medicine, ecology, engineering, and planning to designate situations, entities, or hypotheses that do not meet viability criteria.

Etymology: inviável derives from the word viável (viable), which comes from Latin viābilis, with the negative prefix in- added to form inviável. The contrast between viável and inviável is widely used to express feasibility or survival potential.

In biology and medicine, inviáveis refer to organisms or biological units that cannot develop into a living state. Examples include seeds that do not germinate, embryos that cannot develop into viable fetuses, or cell lines that fail to survive under culture conditions. In ecology, a population or lineage can be described as inviável if it cannot sustain itself over time due to genetic, environmental, or demographic constraints.

In other contexts, inviáveis is used to label plans, proposals, or options that are not feasible under current assumptions, resources, or constraints. The concept is commonly contrasted with viáveis (viable) or with feasibility analyses, which assess whether an objective can be achieved within given limits.

See also: viável, viabilidade, feasibilidade.