dendrochronology

noun

Etymology: Etymology tree Ancient Greek δένδρον (déndron) English dendr- English dendro- Ancient Greek χρόνος (khrónos)bor. English chrono- Proto-Indo-European *leǵ- Ancient Greek λόγος (lógos) Proto-Indo-European *-h₂ Proto-Indo-European *-éh₂ Proto-Indo-European *-i-eh₂ Proto-Hellenic *-íā Ancient Greek -ῐ́ᾱ (-ĭ́ā) Ancient Greek -λογῐ́ᾱ (-logĭ́ā)bor. Latin -logialbor. French -logiebor. English -logy English chronology English dendrochronology From dendro- + chronology.

1. The science that uses the spacing between the annual growth rings of trees to date their exact year of formation.