approximation
1. [ noun ] (mathematics,psychology) an approximate calculation of quantity or degree or worth
Synonyms: idea estimate estimation
Examples:

"an estimate of what it would cost" "a rough idea how long it would take"

Related terms: calculation guess overestimate underestimate guesstimate estimate
2. [ noun ] the quality of being similar (especially close in value)
Related terms: similarity sort approach
3. [ noun ] an imprecise or incomplete account
Examples:

"newspapers gave only an approximation of the actual events"

Related terms: version
4. [ noun ] the act of bringing near or bringing together especially the cut edges of tissue
Synonyms: bringing_close_together
Related terms: joining
Similar spelling:   approximative
  approximate
  approximately
  appreciation