Atomicity

Atomicity may refer to:

Chemistry

 * Atomicity (chemistry), the total number of atoms present in 1 molecule of a substance
 * Valence (chemistry), sometimes referred to as atomicity

Computing

 * Atomicity (database systems), a property of database transactions which are guaranteed to either completely occur, or have no effects
 * Atomicity (programming), an operation appears to occur at a single instant between its invocation and its response
 * Atomicity, a property of an S-expression, in a symbolic language like Lisp

Mathematics

 * Atomicity, an element of orthogonality in a component-based system
 * Atomicity, in order theory; see Atom (order theory)