noc‧tur‧nal /nɒkˈtɜːnl $ nɑːkˈtɜːr-/
adjective[
Date: 1400-1500;
Language: Late Latin;
Origin: nocturnalis, from Latin nocturnus 'by night', from nox 'night']
1. an animal that is nocturnal is active at night:
Hamsters are nocturnal creatures.2. formal happening at night:
Rebecca paid a nocturnal visit to the flat. [TahlilGaran] Dictionary of Contemporary English ▲