co-principal investigator role Role of co-principal investigator of an Agreement (for example, a grant), who devotes a specified percentage of time and is considered key personnel. contract An agreement involving specific deliverables and payment grant An intramural or extramural award to support scholarly work, such as UF09179 (VIVO) Financial assistance mechanism providing money, property, or both to an eligible entity to carry out an approved project or activity Short definition is from the Glossary of NIH Terms. investigator role A role in an Agreement (for example, a grant) as a named investigator or key personnel. principal investigator role Role of a person to direct a project or activity being supported by an Agreement (for example, a grant), and who is accountable to the grantee for the proper conduct of the project or activity. Also known as Program Director or Project Director.