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)
See also Atom (disambiguation)