It's a sequence of events, an inexorable chain reaction where each small link is fundamental, like a snake of upended dominoes.

NPR: Excerpt: 'The Sister'

The television producers had a camera isolated on Mr. Gore for reaction shots, and their directors edited the videotape of his expressions into a rapid-cut sequence.

FORBES: Rick Perry Overcompensates

One example is the polymerase chain reaction (PCR), a standard technique which employs enzymes to churn out millions of copies of a DNA sequence and involves cycles of gentle heating and cooling.

ECONOMIST: Acoustic microfluidics