phototimer

noun
pho·​to·​tim·​er | \ ˈfōt-ō-ˌtī-mər How to pronounce phototimer (audio) \

Medical Definition of phototimer

: a photoelectric device that automatically controls photographic exposures (as to X-rays or light)

Learn More about phototimer

Cite this Entry

“Phototimer.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/phototimer. Accessed 16 Jul. 2020.

Comments on phototimer

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

WORD OF THE DAY

See Definitions and Examples »

Get Word of the Day daily email!

Test Your Vocabulary

Words for Summer: A Quiz

  • a closeup of a sunflower
  • Which of the following words means “of or relating to summer”?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Add Diction

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!