photophase

noun
pho·​to·​phase | \ ˈfō-tə-ˌfāz \

Definition of photophase

2 : the light period of a photoperiodic cycle of light and dark

First Known Use of photophase

1944, in the meaning defined at sense 1

Keep scrolling for more

Learn More about photophase

Share photophase

Statistics for photophase

Look-up Popularity

Time Traveler for photophase

The first known use of photophase was in 1944

See more words from the same year

More from Merriam-Webster on photophase

Rhyming Dictionary: Words that rhyme with photophase

Comments on photophase

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

WORD OF THE DAY

means, resources, or money

Get Word of the Day daily email!

Test Your Vocabulary

Homophone Quiz

  • three-bears-two-of-them-look-like-theyre-whispering-to-a-third-bear-who-looks-chuffed-to-be-the-center-of-attention
  • In order to judge how people felt, the senator's office hired a firm to take a ______.
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

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!