Market technician Arthur Hill on Stockcharts.com notes some exceptionally rare oversold readings on the SPY chart on an indicator called the commodity channel index (CCI).

FORBES: Looking For The Pony In The Market's Dung Heap

Employment is typically what's called a lagging indicator.

WHITEHOUSE: Online Town Hall

One way we can try to measure the level of fear in a given stock is through a technical analysis indicator called the Relative Strength Index, or RSI, which measures momentum on a scale of zero to 100.

FORBES: Oversold Conditions For Lumina Copper Corp

In Saxon England, knives called scramasax were worn everywhere, perhaps as an indicator that the bearer was a free man, and were often intricately ornamented.

FORBES: Magazine Article

Examination of 75 patients showed that the activity of bcl-2 in a tumour was a strong indicator that a patient would respond well to a drug called tamoxifen.

ECONOMIST: An un-killer app

She also called on the Minister for Education and Skills to provide clarity on the position of science as a core subject indicator in schools.

BBC: Debate on science and innovation