Industrial Design Vocabulary in English — 20 Essential Terms

A mock-up is a model built primarily to explore and communicate the appearance, size, and feel of a product — it does not need to work. A prototype is a more developed model that tests whether the product actually functions as intended. In practice, a design team often creates several mock-ups early in the process to agree on the look of the product, and then moves on to prototypes to verify that the design performs correctly before committing to manufacturing. Both are distinct from the final product, but they serve different purposes at different stages of the development cycle.

Ergonomics is the science of designing products and environments so that they fit the physical and cognitive characteristics of the people who use them. In industrial design, this means considering factors such as grip diameter, reach distance, force required to operate controls, visual contrast for readability, and the postures a user adopts during use. Good ergonomics reduces the risk of discomfort, fatigue, and injury, and it also makes products more intuitive and satisfying to use. A design that ignores ergonomics may look attractive but feel awkward in practice, which typically leads to poor user reviews and a shorter product life.

User-centred design is an approach that treats the needs, goals, and limitations of end users as the primary driver of every design decision, from initial research through to final production. Rather than beginning with a technology or an aesthetic idea and then finding users to fit it, user-centred design starts by understanding who the users are, what tasks they need to complete, and what problems they currently experience. This approach matters because products designed this way tend to be more usable, more satisfying, and more commercially successful. It typically involves observation, interviews, usability testing, and iterative refinement based on real feedback rather than assumptions.

CAD, or computer-aided design, software allows designers and engineers to create precise two-dimensional drawings and three-dimensional models of products on a computer. In industrial design, CAD is used to develop and refine the geometry of a product, check that components will fit together correctly, generate technical drawings for manufacturers, and produce files for 3D printing or CNC machining. Popular CAD applications in the field include SolidWorks, Rhinoceros, and Fusion 360. CAD models can also be used to generate photorealistic renderings, run structural simulations, and calculate material volumes and weights before a single physical part is made.

Injection moulding is a manufacturing process in which melted material — most commonly a thermoplastic such as ABS, polypropylene, or nylon — is forced under high pressure into a precision steel or aluminium mould. Once the material has cooled and solidified, the mould opens and the finished part is ejected. Injection moulding is well suited to producing large quantities of identical parts quickly and at low cost per unit, because once the expensive mould has been made the process can run continuously with minimal labour. It is widely used for consumer electronics housings, kitchen appliances, automotive components, and packaging.

A design brief is a written agreement between a client and a design team that sets out the purpose, scope, and constraints of a project before work begins. A well-written brief typically includes a description of the product and its intended use, a profile of the target user, functional and performance requirements, constraints such as maximum weight, dimensions, or retail price, aesthetic guidelines or brand standards, sustainability targets, relevant regulations or safety standards, the project timeline, and the budget. A clear and thorough design brief reduces misunderstandings, gives the designer a measurable standard to work towards, and provides a reference point for evaluating whether the finished product has met the project goals.

In industrial design, sustainability refers to designing products in ways that reduce negative impacts on the environment across the entire lifecycle of the product, from raw material extraction through manufacture, use, and final disposal or recycling. This can mean choosing recycled or renewable materials, reducing the amount of material used, designing for disassembly so components can be separated and recycled at end of life, extending the product's working life through durability and repairability, and minimising packaging waste. Sustainability is increasingly a formal requirement in design briefs, driven both by legislation and by growing consumer demand for environmentally responsible products.

Form refers to the visual and physical appearance of a product — its shape, proportions, colour, texture, and overall aesthetic character. Function refers to what the product actually does, the practical tasks it must perform reliably for its users. The relationship between the two is one of the central debates in design: the modernist principle “form follows function” argues that the appearance of a product should grow naturally from its purpose, while other traditions allow greater freedom to prioritise visual expression. In professional practice, successful industrial design generally achieves a balance: a product that works perfectly but looks unappealing will struggle commercially, while a beautiful product that fails to perform its function is equally unsuccessful.

An iteration is one complete cycle of designing, making, testing, evaluating, and then refining a design based on what was learned. Rather than trying to achieve a perfect design in a single attempt, modern design processes embrace iteration as the primary method of improvement: each cycle produces a better version of the product than the last. The number of iterations needed depends on the complexity of the product and how clearly the requirements were defined at the outset. In fast-paced product development, digital tools such as CAD software and 3D printing have reduced the cost and time of each iteration significantly, making it possible to test and refine designs more quickly than ever before.

The most effective approach is to encounter these terms in realistic professional contexts rather than memorising them from a list in isolation. Reading case studies, design journals, and product launch documentation in English exposes you to the vocabulary in meaningful sentences. Watching product development documentaries and design conference talks, available online with subtitles, also provides excellent listening practice. Use the Flash Cards and Matching Pairs exercises on LexFizz to reinforce the terms you have studied here. When you encounter an unfamiliar word in a design text, look it up, note an example sentence, and try to use the term yourself when describing a product you are working on or studying.