H and D system

noun

Definition of H and D system 

: a system for determining the speed of photographic materials that is based on the characteristic curve and related to the inertia of the material

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

History and Etymology for H and D system

after Ferdinand Hurter and Charles Driffield fl 1890

Keep scrolling for more

Learn More about H and D system

Share H and D system

Dictionary Entries near H and D system

hand drill

hand drum

H and D speed

H and D system

handed

handedness

Handel

Statistics for H and D system

Look-up Popularity

Comments on H and D system

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

WORD OF THE DAY

a nest or breeding place

Get Word of the Day daily email!

Test Your Vocabulary

Late Autumn 2018 Words of the Day Quiz

  • frosted-autumn-leaves
  • Which is a synonym of yahoo?
True or False

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

TAKE THE QUIZ
Word Winder's CrossWinder

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!