(Science: radiobiology) The length of a single cycle of a wave, usually measured from crest-to-crest. For electromagnetic waves, the wavelength determines the type (radio, infrared, visible, ultraviolet, x-Ray, gamma-ray) of radiation, in the case of visible light, wavelength determines the colour of the light.
Synonyms for Lax: chaotic (adjective) amorphous, anarchical, anarchistic, blurry, chaotic, cluttered, confused, deformed,
In general, a laxative is any medication that will cause a person to have a bowel movement. 1  Laxatives vary widely both in their form and in their effectiveness. Laxatives that are used before a colonoscopy, for example, are going to work quicker and with more vigor than ones that are used for a case of occasional constipation.