Definition of nocturnal

The word "nocturnal" has its roots in Latin. The Latin word "nocturnus" means "of the night", which is derived from "noctis", meaning "night". This Latin term was used to describe anything related to the night or nighttime, such as nocturnal animals that are active during the night. The word "nocturnal" entered the English language in the 15th century, derived from the Latin "nocturnus". Initially, it was used to describe animals that were active at night, such as owls, bats, and wolves. Over time, the meaning of the word expanded to include anything that occurs or is done at night, including nighttime activities, habits, or characteristics. Today, we use the word "nocturnal" to describe not only animals but also human activities, such as sleep patterns, nighttime work shifts, or nocturnal behaviors, like staying up late or having a late-night movie marathon.