#expansion__enlargement  the act of increasing in size or volume or quantity or scope
  supertype:  step-up__increase  the act of increasing something; "he gave me an increase in salary"
  subtype:  dilation__dilatation  the act of expanding an aperture; "the dilation of the pupil of the eye"
     subtype:  vasodilation  dilation of blood vessels (especially the arteries)
     subtype:  mydriasis__mydriasi  reflex pupillary dilation as a muscle pulls the iris outward; occurs in response to a decrease in light or certain drugs
  subtype:  distention__distension  the act of expanding by pressure from within
  subtype:  stretching  act of expanding by lengthening or widening
     subtype:  tension  the action of stretching something tight; "tension holds the belt in the pulleys"
     subtype:  extension.stretching  act of stretching or straightening out a flexed limb
        subtype:  hyperextension  greater than normal extension
  subtype:  inflation  a act of filling something with air
  subtype:  magnification  the act of expanding something in apparent size
  subtype:  extension  act of expanding in scope; making more widely available: "extension of the program to all in need"
     subtype:  spread__spreading  act of extending over a wider scope or expanse of space or time
        subtype:  dispersal__dispersion__dissemination__diffusion  the act of dispersing or diffusing something; "the dispersion of the troops"; "the diffusion of knowledge"
           subtype:  crop-dusting__spraying  the dispersion of fungicides or insecticides or fertilizer on growing crops (often from a low-flying aircraft)
        subtype:  strewing__scatter  the act of scattering
        subtype:  decentralization__decentralisation  the spread of power away from the center to local branches or governments
     subtype:  stretch  extension to or beyond the ordinary limit; "running at full stretch"; "by no stretch of the imagination"; "beyond any stretch of his understanding"

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