irisation

noun iris·ation \ˌīrə̇ˈsāshən\

Definition of irisation

plural

-s

  1. 1 :  the act or process of making iridescent the irisation of a culture plate by developing bacteria

  2. 2 :  iridescence irisations in a cloud are evidence that it is composed of water droplets — D. W. Perrie in the area of the sun beautiful irisations may occur

There's more!

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!
Already a subscriber? Log in.

Seen and Heard

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

Love words? Need even more definitions?

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

Love words? Need even more definitions?

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