Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

collodion process

noun

Definition of collodion process

: a photographic process in which collodion is used as a vehicle for sensitive salts specifically : an early process in which the negative is prepared by coating a glass plate with collodion containing iodide, exposing in a camera while wet, developing with pyrogallol or acidified ferrous sulfate, and fixing in a cyanide solution or hypo

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!

Learn More about collodion process

Statistics for collodion process

Look-up Popularity

Comments on collodion process

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

Show Comments  Hide Comments 

WORD OF THE DAY

ecstatic

Listen to the pronounciation of ecstatic

marked by a state of overwhelming emotion

Get Word of the Day daily email!

Test Your Vocabulary

Words from Greek and Latin Quiz

  • roman forum
  • Which of the following months comes from a Latin word for “ten”?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

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!

Words at Play
Ask the Editors
Word Games