spectrum: A graphic or photographic representation of such a distribution. A range of values of a quantity or set of related quantities. A broad sequence or range of related qualities, ideas, or activities. The distribution of a characteristic of a physical system or phenomenom. The color image presented when white light is resolved into its constituent colors: red, orange, yellow, green, blue, indigo, violet. The distribution of energy emitted by a radiant source, as by an incandescent body, arranged in order of wavelengths. Any of various continua that resemble a spectrum in consisting of an ordered arrangement by a particular characteristic. step: One of a series of actions, processes, or measures taken to achieve a goal. A rest for the foot in ascending or descending. The interval that separates two successive tones of a scale. The single complete movement of raising one foot and putting it down in another spot, as in walking. A manner of walking; a particular gait. A fixed rhythm or pace, as in marching.