mesial /mēˈzi-əl/

1. Middle
2. Facing towards the centre of the curve formed by the upper or lower teeth (dentistry)
3. In or towards the median plane or line (also mēˈsal or mēˈsian)

• open court
• open day
• open days
• open diapason
• open diapasons
• open door
• open-door
• open doors
• open economy
• opened
• open-end
• open-ended
• open-endedness
• opener
• openers
• openest
• open-eyed
• open-field
• open fire
• open-handed
• open-handedly
• open-handedness
• open harmony
• open-hearted
• open-heartedly