| APL | having no placenta |
|---|---|
| APL | an order of Amphineura |
| APL | deep-water wormlike mollusks lacking calcareous plates on the body but having fine slimy spicules on the covering mantle |
| APL | (optics) free from or corrected for spherical aberration |
| APL | failure of some tissue or organ to develop |
| APL | anemia characterized by pancytopenia resulting from failure of the bone marrow |
| APL | anemia characterized by pancytopenia resulting from failure of the bone marrow |
| APL | a monocotyledonous genus of the family Orchidaceae |
| APL | North American orchid bearing a single leaf and yellowish-brown flowers |
| APL | light-colored and fine-grained granitic rock consisting chiefly of quartz and feldspars |
| APL | of or related to aplite |
| APL | type genus of the Aplodontiidae: comprising the mountain beavers |