sys·tal·tic 
(sĭ-stôltĭk, -stăl-)
(sĭ-stôltĭk, -stăl-)adj.
Alternately contracting and dilating, as the heart; pulsating.
[Late Latin systalticus, from Greek sustaltikos, from sustellein, to contract : sun-, syn- + stellein, to send; see stel- in the Appendix of Indo-European roots.]
- 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
- prothrombin
- protist
- protistan