gyrochronology en · NOUN
Etymology
Etymology tree English gyro- Ancient Greek χρόνος (khrónos)bor. English chrono- Proto-Indo-European *leǵ- Proto-Indo-European *-os Proto-Indo-European *lóǵos Proto-Hellenic *lógos 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 gyrochronology From gyro- + chronology.
Meanings
- (uncountable) A method of estimating the age of a star by measuring its rotation rate