The phrase "an explanation of the purpose" is correct and usable in written English.
You can use it when you need to clarify the reason or intent behind something, such as a project, action, or statement.
Example: "In the report, we included an explanation of the purpose to ensure that all stakeholders understand the goals of the initiative."
Alternatives: "a clarification of the intent" or "a description of the aim."
This would have led to an explanation of the purpose of the dam.
Potential subjects were approached during the course of their treatment and, following an explanation of the purpose of the study, invited to take part.
Abelard also wrote Dialogus inter philosophum, Judaeum et Christianum ("Dialogue Between a Philosopher, a Jew, and a Christian") and a commentary on St .Paul's letter to the Romans, the Expositio in Epistolam ad Romanos, in which he outlined an explanation of the purpose of Christ's life, which was to inspire men to love him by example alone.
At the time of preoperative consultation, after an explanation of the purpose of this study had been given to each patient, consent to this study was obtained.
The group interviews also revealed that: (i) an explanation of the purpose of the exercises was necessary; and (ii) the warm-up programme in its current form was not suitable as pre-match warm-up (too demanding).
As indicated through our feasibility study, a warm-up programme suitable as pre-match warm-up should be designed (being shorter and lighter), while an explanation of the purpose of the exercises should be added.
The interviews commenced with an explanation of the purposes of the study and questions allowed participants to describe and expand on issues that they considered important.
Written informed consents were obtained from five repeatedly-healthy regular blood donors after an explanation of the nature, purpose, and potential risks of the study and then 230 ml of whole blood was used for the purpose of site-directed in vitro immunization.
The chapter concludes with an explanation of the approach, purpose, and organization of the book.
The interviews began with a consent process and an explanation of the study purpose.
Questionnaire packages contained a cover letter with an explanation of the survey purpose and guarantee of response confidentiality, a questionnaire, and a pre-paid return envelope.
