spacing
1. [ noun ] the time between occurrences of a repeating event
Examples:

"some women do not control the spacing of their children"

Related terms: rate
2. [ noun ] the property possessed by an array of things that have space between them
Synonyms: spatial_arrangement
Related terms: placement distance distribution concentration openness space
Similar spelling:   speaking
  spiciness
  sphagnum
  specimen
  Speakman
  Spackman
  spaceman