percolation

Concise Oxford English Dictionary © 2008 Oxford University Press:
percolate/ˈpɜːkəleɪt/

▶verb

• 1 filter through a porous surface or substance.

• 2 (of information etc.) spread gradually through a group of people.

• 3 (with reference to coffee) prepare or be prepared in a percolator.

• 4 US be or become full of lively activity or excitement.

– derivatives
percolated adjective,
percolation noun.

– origin C17: from L. percolat-, percolare ‘strain through’.