quad·rum·vi·rate 
(kwŏ-drŭmvər-ĭt)
(kwŏ-drŭmvər-ĭt)n.
A group of four people joined in authority or office, especially a government of four people.
[QUADR(I)- + (TRI)UMVIRATE.]
- proteose
- Proterozoic
- protest
- Protestant
- Protestantism
- protestation
- protester
- protestingly
- proteus
- Proteus
- prothalamion
- prothallial
- prothallium
- prothallus
- prothesis
- prothetic
- prothetically
- prothonotarial
- prothonotary
- prothonotary apostolic
- prothonotary apostolic
- prothonotary warbler
- prothoracic
- prothoracic gland
- prothorax