Within the Agency–Process–Scale (APS) framework, biological meaning refers to the significance that conditions, differences, events, relationships, or states possess for a living system. Meaning arises because some aspects of the world matter differently for viability, functioning, and adaptive persistence. Nutrients, predators, light, mates, competitors, and environmental conditions do not affect organisms equally. Their differing significance gives rise to biological meaning.
Biological meaning is not restricted to language, symbols, or conscious thought. Human language represents one specialised form of meaning, but meaning itself is far more fundamental. Living systems continuously encounter conditions that support, threaten, stabilise, or disrupt organised persistence. These differences matter because they influence the organism’s capacity to maintain viable functioning. Biological meaning therefore emerges from the relationship between living systems and the conditions that affect their continued existence and adaptive persistence.
Within APS, biological meaning, evaluation, and value refer to related but distinct concepts. Biological meaning concerns significance. Evaluation concerns the assessment of significance in relation to viability and functioning. Biological value refers to the relatively stable patterns of importance that emerge from repeated evaluative activity. Meaning therefore provides the basis upon which evaluation and value become possible.
Meaning is closely related to semiosis but is not identical to it. Semiosis concerns the organisation and interpretation of meaningful differences within living systems, whereas meaning refers to the significance of those differences. APS therefore treats semiosis and meaning as inseparable but analytically distinct aspects of biological organisation.
Biological meaning is also closely connected to biological agency. Living systems do not merely undergo external events; they actively regulate their interactions with internal and external conditions. Because organisms act in ways that support organised persistence, conditions acquire differential significance. Meaning therefore emerges within ongoing agency rather than existing independently of living activity.
Meaning operates across biological scales. Molecular signalling pathways, cellular regulation, physiological processes, behaviour, ecological interactions, and social organisation may all involve forms of biological meaning. These are not separate kinds of meaning but interconnected expressions of significance distributed across living systems.
Within APS, biological meaning is understood as an emergent property of viability-oriented organisation. It explains why some conditions matter more than others and provides the foundation for evaluation, value, cognition, behaviour, and adaptive action throughout the living world.