Fully Decentralized Organization: Also referred to as Freedom Organization, a type of organization that is fully decentralized and collectively built from the ground up, in which decision-making and governance power is completely distributed to all individuals who take part in the organization. Independent from centralized or third-party control, an FDO is free to evolve.
A-Frame (virtual reality framework): A-Frame is an open-source web framework for building virtual reality (VR) experiences, primarily maintained by Mozilla and the WebVR community. It is designed for developers to create 3D and WebVR scenes using HTML. HTML provides a familiar authoring tool for web developers and designers while incorporating a popular game development pattern used by engines such as Unity.
WebVR: WebVR is a JavaScript API that provides support for virtual reality devices in a web browser.
Decentraland Scripting: The "Iron Age" will implement peer-to-peer communications, a scripting system to enable interactive content, and a system of fast cryptocurrency payments for in-world transactions. A communication layer is essential for social experiences, providing positioning, postures, voice chat, and more; Decentraland achieves this with a P2P network. The scripting system is the tool that landowners will use to describe the behavior and interactions of 3D objects, sound, and applications running on land parcels. Finally, a payment system with low fees is key to developing an economy in the quick environment of a virtual world. (...) The Decentraland scripting language will allow the development of applications, games, gambling, and dynamic 3D scenes. This scripting language will be designed to handle a wide range of capabilities, including creating objects, loading textures, handling physics, encoding user interactions, sounds, payments, and external calls, among others (source).
MVT: MVT is a limited supply token on the Ethereum blockchain that is used to govern The Movement FDO via voting rights, to incentivize activity and collaboration, as well as for utility and purchasing power inside and outside of the virtual world. Its uses are not limited by any central authority and evolve according to its holders' needs.