| PL | coextensive with the genus Platanus: plane trees |
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| PL | the property of having two dimensions |
| PL | a power tool for smoothing or shaping wood |
| PL | a deciduous tree of the family Ulmaceae that grows in the southeastern United States |
| PL | any of the celestial bodies (other than comets or satellites) that revolve around the sun in the solar system |
| PL | a person who follows or serves another |
| PL | an outer gear that revolves about a central sun gear of an epicyclic train |
| PL | an outer gear that revolves about a central sun gear of an epicyclic train |
| PL | of or relating to or resembling the physical or orbital characteristics of a planet or the planets |
| PL | an apparatus or model for representing the solar systems |
| PL | an optical device for projecting images of celestial bodies and other astronomical phenomena onto the inner surface of a hemispherical dome |
| PL | a building housing an instrument for projecting the positions of the planets onto a domed ceiling |