 ##  [Well-Formed Formula](/well-formed-formula) 

  ##  [Well-Formed Formula](https://mathlogic.quantumdictionary.io/well-formed-formula-0) 

  
 [![Mathematics & Logic Dictionary](/sites/default/files/styles/large/public/2026-01/Mathematics%20%26%20Logic.png.webp?itok=UhtTRPnp)](/topic-specific-dictionaries/natural-formal-sciences/mathematics-logic)

- Natural &amp; Formal Sciences -

**Mathematics &amp; Logic Dictionary**

 
Definition

A syntactically valid expression of a formal language constructed from atomic formulas and logical connectives according to the formation rules of that language; commonly abbreviated WFF.