(physics, mathematics) A soliton whose first derivative is discontinuous.

plural of peakon

plural of peaknik

(colloquial) Of or relating to a peak or peaks; belonging to a mountainous region. / (colloquial) Having peaks; peaked. / (colloquial) Having thin or sharp features, as from sickness; sickly; peaky.

plural of peaklet

A small peak.

(neologism) One who believes that the peak oil point is approaching.

An electric power station used to rapidly generate power to prevent brownouts when demand rapidly increases, exceeding supply and the ability of baseload power generation stations to ramp up the supply of electricity.

A set of peaks (on a graph etc.)

Absence of a peak or peaks.