photoperiod (redirected from photoperiods)

photoperiod /pho·to·pe·ri·od/ (fo´to-pēr″e-od) the period of time per day that an organism is exposed to daylight (or to artificial light).photoperiod´ic

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pho·to·pe·ri·od (ft-pîr-d)

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.

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photo·peri·odic (-dk), photo·peri·odi·cal (--kl) adj.

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photoperiod

the period of time per day that an organism is exposed to daylight (or to artificial light).