photoperiod (ˌfəʊtəʊˈpɪərɪəd) ![]() | |
| —n | |
| See also photoperiodism the period of daylight in every 24 hours, esp in relation to its effects on plants and animals | |
| photoperi'odic | |
| —adj | |
| photoperi'odically | |
| —adv | |
| a fool or simpleton; ninny. |
| a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes. |
photoperiod pho·to·pe·ri·od (fō'tō-pĭr'ē-əd)
n.
The duration of an organism's daily exposure to light, considered especially with regard to the effect of such exposure on growth and development.
| photoperiod (fō'tō-pîr'ē-əd) Pronunciation Key
The duration of an organism's daily exposure to light, considered especially with regard to the phenomena of photoperiodism. |