App – mobile application for smartphones or tablets; device-specific software to perform a defined task, specifically designed to run on a device’s operating system and machine firmware; not a mobile website. Also called native app.

Bootstrap – website framework from Twitter; toolkit of HTML, CSS and Javascript that enables responsive websites.

Decorator – standard header, footer and navigation for mobile sites, used with a mobile web framework.

Device agnostic – compatible with any web-capable mobile device.

e-Reader – mobile device primarily used for reading digital e-books.

Graceful degradation – website developed for enhanced browsers and devices, which displays a more limited experience for less capable devices.

Mobile web framework (MWF) – centrally hosted library of CSS, Javascript and other assets that mobile websites reference to deliver ‘look-and-feel’; used to maintain a consistent, unified mobile identity in a distributed environment.

Mobile website – a standalone, separate version of a website that delivers a subset of directed, task-oriented content for on-the-go users.

Progressive enhancement – use of web technologies in a layered fashion beginning with basic content, then providing enhanced versions to more advanced browsers and devices.

Responsive web design (RWD) – website construction providing the ability to automatically rearrange content to optimize viewing according to screen size.

Smartphone – mobile phone with advanced computing abilities and connectivity.

Tablet – mobile computer with a touchscreen as the primary interface.