To save this word, you'll need to log in.
Definition of formal truth
: the true elaboration of concepts, meanings, or implications that is relatively independent of external existence or nonexistence
the formal truth of a definition the truth that certain premises give a certain conclusion is a formal truth
— called also logical truth
Comments on formal truth
What made you want to look up formal truth? Please tell us where you read or heard it (including the quote, if possible).
Test Your Vocabulary
Semantic Drift Quiz
- Which of the following was once a synonym for fun?
Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridgedWords at Play
Ask the Editors
Word Games
Share formal truth