Meaning : An approximate calculation of quantity or degree or worth.
Example :
An estimate of what it would cost.
A rough idea how long it would take.
Synonyms : estimate, estimation, idea
Meaning : The quality of coming near to identity (especially close in quantity).
Meaning : An imprecise or incomplete account.
Example :
Newspapers gave only an approximation of the actual events.
Meaning : The act of bringing near or bringing together especially the cut edges of tissue.
Synonyms : bringing close together