1. The equipotential surface of the Earth, equivalent to sea level over the oceans

Derived forms: geoids

Encyclopedia: Geoid

• acetylsalicylic acid
• ACH
• Achaea
• Achaean
• Achaian
• ache
• achene
• achenial
• Acheron
• Acheronian
• Acherontia
• Acherontia atropos
• Acherontic
• Acheson
• Acheson process
• Acheta
• Acheta assimilis
• Acheta domestica
• achievability
• achievable
• achieve
• achievement
• achiever
• Achille Ratti
• achillea