Definition of plastochron in English:

plastochron

Pronunciation /ˈplastəkrɒn/

noun

(also plastochrone)
Botany
  • The interval of time between the initiation of leaf growth at two consecutive nodes in a growing shoot apex.

Origin

1920s; earliest use found in New Phytologist. From German Plastochron from ancient Greek πλαστός formed, moulded + χρόνος time.