long-day

adjective
\ ˈlȯŋ-ˈdā How to pronounce long-day (audio) \

Definition of long-day

: responding to or relating to a long photoperiod used especially of a plant — compare day-neutral, short-day

First Known Use of long-day

1920, in the meaning defined above

Keep scrolling for more

Learn More about long-day

Time Traveler for long-day

Time Traveler

The first known use of long-day was in 1920

See more words from the same year

Statistics for long-day

Cite this Entry

“Long-day.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/long-day. Accessed 5 Mar. 2021.

Style: MLA
MLA Chicago APA Merriam-Webster

Comments on long-day

What made you want to look up long-day? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

Test Your Vocabulary

Who Knew?

Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!