Definition of day length in English:

day length

noun ˈdeɪ lɛŋ(k)θ

1The length of the day, either: (a) the time between sunrise and sunset (i.e. the duration of daylight), especially as it varies at different times of the year or at different latitudes; or (b) the time from one sunrise to the next (on earth currently 24 hours). Also as a count noun: a day of a specified length.
2Biology. The length of daily illumination which an organism receives; the length of light exposure which is most effective in stimulating a particular physiological process, such as reproduction, in a plant or other organism; = "photoperiod".

adjective ˈdeɪ lɛŋ(k)θ

Designating clothes (especially dresses and skirts) that are shorter in length than evening clothes, and typically intended for use during the day.

Origin

Mid 16th century. From day + length.

Definition of day length in US English:

day length

nounˈdeɪ lɛŋ(k)θ

1The length of the day, either: (a) the time between sunrise and sunset (i.e. the duration of daylight), especially as it varies at different times of the year or at different latitudes; or (b) the time from one sunrise to the next (on earth currently 24 hours). Also as a count noun: a day of a specified length.
2Biology. The length of daily illumination which an organism receives; the length of light exposure which is most effective in stimulating a particular physiological process, such as reproduction, in a plant or other organism; = "photoperiod".

adjectiveˈdeɪ lɛŋ(k)θ

Designating clothes (especially dresses and skirts) that are shorter in length than evening clothes, and typically intended for use during the day.

Origin

Mid 16th century. From day + length.

词汇	day length
释义	Definition of day length in English: day length noun ˈdeɪ lɛŋ(k)θ 1The length of the day, either: (a) the time between sunrise and sunset (i.e. the duration of daylight), especially as it varies at different times of the year or at different latitudes; or (b) the time from one sunrise to the next (on earth currently 24 hours). Also as a count noun: a day of a specified length. 2Biology. The length of daily illumination which an organism receives; the length of light exposure which is most effective in stimulating a particular physiological process, such as reproduction, in a plant or other organism; = "photoperiod". adjective ˈdeɪ lɛŋ(k)θ Designating clothes (especially dresses and skirts) that are shorter in length than evening clothes, and typically intended for use during the day. Origin Mid 16th century. From day + length. Definition of day length in US English: day length nounˈdeɪ lɛŋ(k)θ 1The length of the day, either: (a) the time between sunrise and sunset (i.e. the duration of daylight), especially as it varies at different times of the year or at different latitudes; or (b) the time from one sunrise to the next (on earth currently 24 hours). Also as a count noun: a day of a specified length. 2Biology. The length of daily illumination which an organism receives; the length of light exposure which is most effective in stimulating a particular physiological process, such as reproduction, in a plant or other organism; = "photoperiod". adjectiveˈdeɪ lɛŋ(k)θ Designating clothes (especially dresses and skirts) that are shorter in length than evening clothes, and typically intended for use during the day. Origin Mid 16th century. From day + length.
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