photoperiodic
/ˌfoʊtoʊˌpɪriˈɑdɪk/
adjective
- Relating to or affected by the length of daylight in a day.
- Gardeners use photoperiodic lighting to keep poinsettias blooming for the holidays.
- The photoperiodic response of soybeans determines when they start producing pods.
- Many animals have a photoperiodic clock that tells them when to prepare for winter.
Synonyms