Irreversibla

Irreversibla is a Swedish adjective used to describe processes or states that cannot be reversed to their original form without external intervention. The standard form in singular is irreversibel, while irreversibla is used for plural or feminine nouns. In scientific and technical contexts it corresponds to the English term irreversible.

In thermodynamics, irreversible processes are those that cannot be undone simply by reversing the path; they involve dissipation of energy and an overall increase in entropy. Real-world examples include friction, viscous heating, heat transfer with losses, diffusion, and chemical reactions with a preferred direction. By contrast, idealized reversible processes are hypothetical, requiring infinitely slow changes and no dissipative effects.

In chemistry and physics, irreversibility can describe reaction pathways that proceed in one favored direction, phase transitions with hysteresis, or mechanical damage that cannot be repaired without replacement. In biology and medicine, irreversible damage to tissues or organs is common terminology, as is the concept of aging as an effectively irreversible progression on organismal timescales.

In philosophy and the study of time, irreversibility relates to the arrow of time: certain processes appear to flow in one temporal direction due to entropy increase, information loss, or causality constraints. The term irreversibla thus marks a fundamental asymmetry found across natural phenomena and, metaphorically, in some social and historical processes.