WordReference Random House Unabridged Dictionary of American English © 2026
day′light sav′ing,
- Timethe practice of advancing standard time by one hour in the spring of each year and of setting it back by one hour in the fall in order to gain an extra period of daylight during the early evening.
- 1905–10
'daylight saving' also found in these entries (note: many are not synonyms or translations):
British Summer Time
- DST
- Ds
- EDT
- daylight-saving time
- fast
- fast time
- split-time
- summer time