spec

"Spec" is short for "specification." It usually means a clear description of what something must be like or what it must include. Think of it like a plan that lists the needed details. Builders use specs for materials and sizes, engineers use them for parts and performance, and software teams use them to explain how a feature should work.

You might hear someone say, "The spec for this project is pretty tight," meaning the requirements are very exact. Or someone might ask, "Does it meet the spec?" to check whether it matches the required standard. In everyday use, people also talk about a phone's specs or a laptop's specs, meaning its main technical details.

"Spec" is a common short form of "specification." Once you know that, the word becomes much easier to understand. It does not mean just any detail. It usually means a clear and exact description of the features, measurements, standards, or requirements for something, whether that thing is a product, a building, a project, or a piece of software.

The word is especially common in technical work. In engineering, manufacturing, and construction, people use it when they need something built or checked in an exact way. If a part is made "to spec," it matches the required standard. In software, a spec may explain what a new feature should do, how it should behave, and what rules it must follow. When people shop for a computer, phone, or camera, they often say "specs" to mean the device's technical details, such as processor speed, memory, screen size, or battery life.

Context matters. Most of the time, the word points to official requirements or technical details, but people sometimes use it more loosely for the features they want. For example, "This car isn't really my spec" can mean it does not match someone's preferred style or features, especially in British English. Overall, the idea behind the word is consistency and precision: it tells you what something should be like, or it names the key details that help you judge it.