A minor detail affecting a legal decision, often one that allows someone to avoid a penalty or responsibility. The case was dismissed on a technicality, as the evidence was obtained without a proper warrant.
A specific detail or aspect of a subject, especially one that requires specialized knowledge. The engineer explained the technicalities of the new software to the team.
The state or quality of being technical; a level of complexity or specificity characteristic of specialist discourse. The technicality of the manual makes it difficult for non-experts to follow.