Shariah Investing Primer
Haram – Forbidden by Islamic law
Halal – Permitted or according to Islamic law
Fatwa – An authoritative ruling on a point of Islamic law
Mufti – A Muslim legal expert who is empowered to give rulings on religious matters
Riba – An increment or increase. Interest on money-lending is the most common kind of riba. It is strongly condemned in the Quran in several verses. Examples of riba include interest on bank loans and credit cards, gains from trading bonds or other debts, and interest earned on savings and other deposit accounts.
Source: Idafa Investing, Oxford English Dictionary