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:
Definition of 'indicator'. indicator (ÉªndÉªkeÉªtÉÊ³ ) An indicator is a measurement or value which gives you an idea of what something is like. ...vital economic indicators, such as inflation, growth and the trade gap. The number of wells is a fair indicator of the demand for water. Synonyms: sign, mark, measure, guide More Synonyms of indicator. 2. countable noun. A car's indicators are the flashing lights that tell you when it is going to turn left or right.