1. approximation, estimate, estimation, idea

an approximate calculation of quantity or degree or worth

Example Sentences:
'an estimate of what it would cost'
'a rough idea how long it would take'

• estimate
• estimation
• idea

2. approximation

the quality of coming near to identity (especially close in quantity)

3. approximation

an imprecise or incomplete account

Example Sentences:
'newspapers gave only an approximation of the actual events'

4. approximation, bringing close together

the act of bringing near or bringing together especially the cut edges of tissue

• bringing close together