Definition

Noun: The lead scientist or researcher who holds primary responsibility for the design, conduct, and management of a scientific experiment or research project. This individual is typically accountable for the project's intellectual direction, ethical oversight, administration of funds, and reporting of results.

Usage

The term "principal investigator" is used formally in academic, governmental, and industrial research contexts to designate the individual with ultimate authority and accountability for a research endeavor. - It is commonly abbreviated as PI. - It is often used with the possessive form ("the PI's role") or preceded by articles ("a principal investigator," "the principal investigator").

Examples

• Noun:
  • Dr. Chen is the principal investigator on the grant studying climate change impacts.
  • The principal investigator submitted the final report to the funding agency.
  • All protocol amendments must be approved by the principal investigator.

Advanced Usage

• "to serve as principal investigator": To act in the role of the lead researcher.
  • She will serve as principal investigator for the new clinical trial.
• "co-principal investigator": A researcher who shares lead responsibilities equally with another on a project. (Note: This is a distinct compound term).
  • The project has two co-principal investigators from different universities.

Variants and Related Words

• PI: The standard acronym for "principal investigator."
  • Please direct all inquiries to the PI.
• Lead Investigator: A near-synonymous term, though sometimes used in more specific contexts like clinical studies or detective work.
• Research Director: A broader term that may encompass the role of a PI but can also refer to leadership over multiple projects or a department.

Synonyms

• Lead Scientist
• Project Director (in a research context)
• Chief Investigator

Related Phrases

• PI Responsibilities: Refers to the specific duties of the principal investigator, such as supervision, compliance, and fiscal management.
  • The workshop covered PI responsibilities regarding lab safety.
• PI Eligibility: Criteria that determine who is qualified to be a principal investigator at an institution.
  • Tenured faculty typically have PI eligibility.

Noun

1. the scientist in charge of an experiment or research project