retainre·tain /rɪˈteɪn/ verb [transitiveT]1to keep something or to continue to have itA duplicate copy of the invoice will be retained for record purposes.
Following the merger, the family willretain a 1.9% stake in the company.
2HUMAN RESOURCES to continue to employ people after a company has changed ownership, reduced in size etcThe new company retained all the staff employed at the time of the takeover.
3if a company retains a lawyer or other specialist, it pays them to do work for it, now or in the futureThe company will retain an auditing firm for six months to review its business practices.