plastochron

noun

plas·​to·​chron

ˈplastəˌkrän

plural -s

: a unit of time corresponding to the interval between two successive similar, periodically repeated events (as the emergence of leaf primordia at any two successive nodes in a stem apex)

plastochronic

¦⸗⸗¦kränik

adjective

Word History

Etymology

plasto- + Greek chronos time

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