Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

ratio cognoscendi

noun
ra·​tio cog·​no·​scen·​di | \ˈrätēˌōˌkȯgnəˈsken(ˌ)dē\
plural rationes cognoscendi\ˌrätēˈō(ˌ)nāˌskȯg-​ \

Definition of ratio cognoscendi 

: the ground of knowledge : something through or by means of which a thing is known

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 ratio cognoscendi

Latin

Keep scrolling for more

Learn More about ratio cognoscendi

Share ratio cognoscendi

Statistics for ratio cognoscendi

Look-up Popularity

Comments on ratio cognoscendi

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

Show Comments  Hide Comments 

WORD OF THE DAY

immure

to enclose within walls

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?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Dictionary Devil

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