Move one’s hand to and fro in greeting or as a signal
Farrell waved a hand dismissively
A wave of compression and rarefaction in the atmosphere; especially a sound wave.
To wave or gesture with the hands; (specifically in extended use) to use gestures or insubstantial language in order to convince or impress.
A spell of exceptionally hot weather; a heat wave.
A type of surface wave characterized by side-to-side motion of the particles as well as motion in ellipses as part of the forward movement of the wave; specifically a seismic wave of this type.
Relating to or belonging to an old-fashioned style or methodology, specifically the realist style of film-making dominant before the ‘New Wave’ of the late 1950s.
A wave that appears to roll over the surface of a liquid; specifically a type of surface wave that occurs as one of a series of such waves separated by calm liquid and moving faster than the bulk liquid.
A soft, light permanent wave designed to give the hair fullness
A wave or system of waves set up at the bows of a moving ship
A spell of cold weather over a wide area
A standing wave generated on the sheltered side of a mountain by an air current passing over or around it, and often made visible by the formation of clouds
A radio wave of a wavelength above one kilometre (and a frequency below 300 kHz)
A group of people or artistic works introducing new styles or ideas, in particular
A radio wave reflected from the ionosphere
An area of the sea where machinery is installed to harness the energy produced by waves in order to generate electricity
A particularly large and dangerous sea wave; a potentially deadly tidal wave.
A seismic wave.
A particle considered in terms of its wavelike properties; a de Broglie wave.
A wave of the ocean.
A wave in a plasma (e.g. an Alfvén wave) involving the oscillation of its charged particles and giving rise to a varying electromagnetic field.
A wave of blood flow through an artery, corresponding to a pulse.
A wave resulting from recoil.
A wave which returns or goes backward; specifically †a fast, high sea wave occurring as a result of an earthquake close to the coast, caused by the lifting and subsequent subsidence of the coastal land (obsolete).
A small geometrid moth, Idaea aversata, which has pale wings with either brown bands or brown lines, and is found widely in Eurasia and North Africa.
A wave of unpredictable size, speed, or direction; (now) specifically an exceptionally large wave in the open ocean that far exceeds those encountered in prevailing sea conditions, with heights reaching 25 to 30 metres (approx. 82 to 98 feet).
A long-wavelength fluctuation of a current in a fluid system having no divergence and subject to a Coriolis force; especially a lateral fluctuation of a jet stream, with wavelength comparable with the radius of the earth.
A wave in three dimension (as opposed to one confined to a plane or a surface).
(Usually with capital initials) a period of major economic, social, and cultural change (following an agrarian First Wave and industrial Second Wave), in which knowledge (especially as stored and disseminated by information technology) becomes the primary productive force.
A northern geometrid moth, Venusia cambrica, with pale wings marked with wavy brown lines, and caterpillars that feed on the leaves of rowan (Sorbus aucuparia).
A transverse magnetohydrodynamic wave travelling in the direction of the magnetic field in a magnetized plasma. The velocity of such waves (the Alfvén velocity or speed) is characteristic for a plasma of given properties
A sudden increase in the number of crimes committed in a country or area
A wave set in wet hair using the fingers
A radio wave which reaches a receiver from a transmitter directly, without reflection from the ionosphere
An electromagnetic wave by which light is propagated through a medium or vacuum
A radio wave of a frequency between 300 kHz and 3 MHz
An electromagnetic wave of a frequency between about 104 and 1011 or 1012 Hz, as used for long-distance communication
A sharp change of pressure in a narrow region travelling through a medium, especially air, caused by explosion or by a body moving faster than sound
A radio wave of a wavelength between about 10 and 100 m (and a frequency of about 3 to 30 MHz)
A wave of compression and rarefaction, by which sound is propagated in an elastic medium such as air
A periodic wave that varies abruptly in amplitude between two fixed values, spending equal times at each
An exceptionally large ocean wave, especially one caused by an underwater earthquake or volcanic eruption
The number of waves in a unit distance
A group of superposed waves which together form a travelling localized disturbance, especially one described by Schrödinger’s equation and regarded as representing a particle
Power obtained by harnessing the energy produced by waves at sea
The theory that light is propagated through the ether by a wave motion imparted to the ether by the molecular vibrations of the radiant body
A group of waves of equal or similar wavelengths travelling in the same direction
An electric signal in the form of a wave; a rhythmically varying voltage.
The wave associated with the movement of an electron and held to account for its wave-like properties; a de Broglie wave of an electron.
A wave occurring within a liquid or gas; especially a transverse wave occurring either along the interface between layers of different density or within a layer having a vertical density gradient.