pre·men·stru·al 
(prē-mĕnstr-əl)
(prē-mĕnstr-əl)adj.
Of, relating to, or occurring in the period just before menstruation.
pre·menstru·al·ly adv.
- aport
- aposematic coloration
- aposiopesis
- aposiopetic
- aposporic
- aposporous
- apospory
- apostasy
- apostate
- apostatize
- a posteriori
- apostle
- apostlehood
- "Apostle of the English."
- Apostles' Creed
- apostleship
- apostolate
- apostolic
- apostolical
- apostolically
- apostolic delegate
- Apostolic Father
- apostolicity
- apostrophe
- apostrophe