per·i·na·tol·o·gy 
(pĕr′ə-nā-tŏlə-jē)
(pĕr′ə-nā-tŏlə-jē)n.
The medical specialty concerned with the care of the mother, fetus, and infant during the perinatal period.
- open-ballot voting
- open chain
- open city
- open classroom
- open cluster
- open court
- open door
- open-door
- open-end
- open-ended
- open-endedly
- open-endedness
- open-end investment company
- open-end wrench
- open enrollment
- opener
- open-eyed
- open eyes
- open-faced
- open fire
- openhanded
- openhandedly
- openhandedness
- openhearted
- openheartedly