In geology, a subdivision of a zone corresponding to the vertical distribution of characteristic species.(noun)
The Century Dictionary (Public Domain)
Use "hemera" in a sentence
"The genus name Hemerocallis comes from the Greek words hemera, meaning "day" and kalos, translating to "beautiful"."
"It was only to-day that I discovered this was the modern pronunciation of kale hemera, and on greeting a man in the ancient form he stood up and wondered what I meant, then said, "No, no"."
"Decameron comes from two Greek words deka, ten, and hemera, a day, the book being so called because the stories in it were supposed to be told in ten days."