(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,
Synonyms: cool, calm, composed, collected, imperturbable, nonchalant. These adjectives indicate absence of excitement or discomposure in a person, especially in times of stress. Cool usually implies an alert self-possession, but it may also indicate aloofness: Keep strong, if possible. In any case, keep cool.