Entrepreneur and venture capitalist Paul Graham popularised the term defining it as: "Ramen profitable means a start-up makes just enough to pay the founders' living expenses".
React or ReactJS
React is an open-source, front-end library for building user interfaces or UI components. It is maintained by Facebook and a community of individual Developers and companies. React can be used as a base in the development of single-page or mobile applications.
Return on Investment (ROI)
A concept used by both founders and investors to determine how much value will be generated by an investment. Founders need to consider for example the value of the return they will see by investing in new features or staff, whereas an investor will consider what their equity stake could be worth on exit against their original investment.
The way by which a start-up generates or plans to generate revenue.
A runway describes how long your cash will last and when you think it will run out. The key here is knowing when to start pitching for investment so you can time it to come in before you run out of cash.