As if the oceans needed more terrible news, scientists have learned that the coral reefs surrounding the Florida Keys are dissolving. The culpritâocean acidificationâwasnât expected to start hitting reefs hard for another three decades.
index noun (LIST) C1 [ C ] an alphabetical list, such as one printed at the back of a book showing which page a subject, name, etc. is on: Try looking up heart disease in the index. âº [ C ] a collection of information stored on a computer or on a set of cards, in alphabetical order:
more dictionary definitions. 1  1. an alphabetical list of something such as subjects or names at the back of a book, that shows on which page they are mentioned Look up the term you want in the index. 2  2. economics a number that shows the price, value, or level of something compared with something else a wage/price index.