Letters that make diurnal
a, d, l, n, r, i, u are letters that make 'diurnal'
diurnals is a word created by adding a letter to 'diurnal'
2 possible definitions for 'diurnal'
Under this definition, diurnal is an adjective and has the following properties:
nocturnal has the opposite meaning of diurnal
'diurnal' can be a category of biology, biological science.
"diurnal animals are active during the day", "diurnal flowers are open during the day and closed at night", "diurnal and nocturnal offices"
Under this definition, diurnal is an adjective and has the following properties:
periodic, periodical are similar to 'diurnal'.
"diurnal rotation of the heavens"