Noun | 1. | principal investigator - the scientist in charge of an experiment or research projectSynonyms: PI |

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princess pine

princess royal

Princesse

Princesslike

Princeton

Princeton University

Princeton WordNet

Princewood

Princified

Principal

Principal axes of a quadric

principal axis

Principal challenge

Principal contract

principal diagonal

Principal focus

**-- principal investigator --**

Principal obligation

Principal of a quadric

Principal plane

Principal point

Principal ray

Principal section

principal sum

principal type

Principality

Principality of Andorra

Principality of Liechtenstein

Principality of Monaco

Principally

Principalness

principalship

Principate

princess royal

Princesse

Princesslike

Princeton

Princeton University

Princeton WordNet

Princewood

Princified

Principal

Principal axes of a quadric

principal axis

Principal challenge

Principal contract

principal diagonal

Principal focus

Principal obligation

Principal of a quadric

Principal plane

Principal point

Principal ray

Principal section

principal sum

principal type

Principality

Principality of Andorra

Principality of Liechtenstein

Principality of Monaco

Principally

Principalness

principalship

Principate