The unemployed comprise all persons of working age who were: a) without work during the reference period, i.e. were not in paid employment or self-employment; b) currently available for work, i.e. were available for paid employment or self-employment during the reference period; and c) seeking work, i.e. had taken specific steps in a specified recent period to seek paid employment or self-employment. For purposes of international comparability, the period of job search is often defined as the preceding four weeks, but this varies from country to country.
Source: ILO (Stat) 2016, Global

A person who is not employed but is available to work and actively seeking full- time or part-time work. (Definition also used by Queensland government)
Source: Wahba 2013, Global