(computing) The development of a computational theory of design. / (computing) The design of products and processes through the use of digital means, integrating digital technology.

(security, computing) Relying on a secure design to defend against attacks.

(software, design) A software design approach that prescribes that software designers should define formal, precise and verifiable interface specifications ("contracts") for software components that extend the ordinary definition of abstract data types with preconditions, postconditions and invariants.

(computing) The practice of planning for contingencies in the design stage of a project so as to make the misuse of the software impossible, or to minimise the negative consequences.

(mathematics) In combinatorial mathematics, a set together with a family of subsets (repeated subsets are allowed at times) whose members are chosen to satisfy some set of properties deemed useful for a particular application.

A set of rules on design of buildings and public spaces.

the application of a defined set of cognitive, strategic and practical processes to develop design concepts

Alternative form of security by design

Of a transport system (such as a road or railway), the assumed vehicle speed used in calculations when designing the system; typically the fastest speed at which it is deemed safe to use the system.

Design that is accessible to all, regardless of any disability.