having formally become a monk or nun through ordination. Ordination as a Buddhist Bhikshu (monk) or Bhikshuni (nun) can be seen both as the culmination of a period of intense preparatory cultivation and as the beginning of a new and fuller life in the Dharma

Chosen, authorized or endorsed. Generally used to describe God's approval. Ordination of a minister is the act of recognizing God's endorsement upon an individual for a ministry office, implemented by the laying on of hands or the issuance of ministerial credentials. "...He has appointed a day on which He will judge the world in righteousness by the Man whom He has ordained. He has given assurance of this to all by raising Him from the dead" (Acts 17:31).

invested with ministerial or priestly functions; "an ordained priest"

fixed or established especially by order or command; "at the time appointed (or the appointed time")