- apocopationA word formed by removing the end of a longer word.
- apohermIn an orbit around the planet Mercury, the point that is most distant from Mercury.
- apotemnophiliaA psychological disorder characterized by the intense and long-standing desire for amputation of a specific limb.
- apotemnophobiaA fear of amputation (afraid that one will lose appendages), fear of amputations (fear of amputations on others), fear of amputees (persons with amputations).
- osseoaponeuroticPertaining to an object composed of bone and aponeurosis; at the end of a muscle where it becomes tendon.