1. Slender aspen native to North America
   - American aspen, Populus tremuloides

Type of: aspen

• aponeurosis
• aponeurotic
• apopemptic
• apophasis
• apophatic
• apophatism
• apophthegm
• apophyge
• apophyllite
• apophyseal
• apophysis
• apoplectic
• apoplectiform
• apoplectoid
• apoplexy
• apoptosis
• aporia
• Aporocactus
• Aporocactus flagelliformis
• aport
• aposelene
• aposematic
• aposematic coloration
• aposiopesis
• aposiopetic