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Parent class and superclasses all the way to to 'Entity'

This is an ontological definition of the entity using the standard format of specifying the parent class followed by specification of characteristics that distinguish this class from others in that class

Ontological definitions can sometimes be hard to read so this provides an informal version that is more user friendly where required

This specifies terms that are often used instead of the formal label. A given synonym may relate to more than one label and labels may have more than one synonym so it is better to use the formal label than any synonyms when writing to avoid confusion.

This is optional explanatory text, elaborating on the definition and explaining how the entity should be used

This indicates whether the entity has fuzzy boundaries e.g. adolescence. In that case users of the term must precisely specify the operationalisation of the class in each usage.

This specifies which of 8 AddictO sub-ontologies the entity is contained within. These are: Human being, Human population, Human behaviour, Organisation, Intervention, Environmental system, Product, Research activity