1. the act or process of making something external or expressing something internal in an outward form
Usage: British spelling; American equivalent is 'externalization'; commonly used in psychology, philosophy, and business contexts
2. the transfer of a function, service, or responsibility from an organization to an external provider
Usage: business and organizational management term
3. in psychology, the process of attributing one's own internal states or feelings to external causes or other people
Usage: psychology and cognitive science term

Examples

• The externalisation of her emotions through art helped her process her grief.
• Many companies have pursued externalisation of their IT services to reduce costs.
• The externalisation of blame is a common defense mechanism in psychology.
• The artist's externalisation of abstract concepts made them visible to the audience.
• Business externalisation strategies can improve efficiency but may reduce direct control.
• Through externalisation, internal conflicts can become clearer and more manageable.