1. Of leaves or flowers; developing or opening in succession from base to apex

Antonym: basipetal

• Pyrrhus
• pyrrole
• Pyrrophyta
• Pyrrosia
• Pyrrosia lingua
• Pyrularia
• Pyrularia pubera
• Pyrus
• Pyrus communis
• pyruvic acid
• Pythagoras
• Pythagorean
• Pythia
• Pythiaceae
• Pythian
• Pythian Games
• Pythias
• pythium
• Pythium debaryanum
• Pythius
• python
• Python molurus
• Python reticulatus
• Python sebae
• Python variegatus