 ##  [Atomicity](/index.php/atomicity) 

  ##  [Atomicity](https://mathlogic.quantumdictionary.io/atomicity-0) 

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

- Natural &amp; Formal Sciences -

**Mathematics &amp; Logic Dictionary**

 
Definition

The model-theoretic property of a theory or structure that every complete type over the empty set (or a specified parameter set) is isolated by a single formula; equivalently, every tuple in the structure has a principal (isolated) type.