Science & TechnologyGreek → English
Chronotype
/ˈkrɒnətaɪp/noun
A person's natural timing for sleep and alertness, from decided morning types to confirmed night owls.
The Greek roots
χρόνος
khrónos
time
τύπος
týpos
stamp, pattern
Literally: “time stamp”
The story of the word
Chronobiology needed a noun for the trait and built one from stock parts, with questionnaires measuring it since the 1970s. The spread is real and partly inherited: variants in clock genes shift preferred sleep timing by hours, and adolescence pushes nearly everyone late for a few years before dragging them back. School start times are the argument the word usually gets used in.
- How it travelled
- Ancient Greek → scientific coinage → English
- First recorded
- 20th century
Same family
chronicchronologyanachronismprototype
In a sentence
Scheduling the hardest meeting at eight in the morning ignores half the team's chronotype.