nychthemeral

synonym: circadian
https://doi.org/10.1351/goldbook.15929
Relating to or exhibiting a nychthemeron or \(\pu{24\!\mbox{-}h}\) period.
Source:
PAC, 2007, 79, 1153. (Glossary of terms used in toxicology, 2nd edition (IUPAC Recommendations 2007)) on page 1272 [Terms] [Paper]