approximate
[形]1 〈数量・時間・叙述などが〉概算の,ほぼ正確な,(基準などに)近い≪to≫the approximate number概数All figures are very approximate...
approximately
[副]だいたい,おおよそ,ざっと(◆about がふつう)
approximate a solution
解決に近づく
approximate one's performance to perfection
演技を完璧に近づける
approximate to the truth
真実に近い
approximate to zero
ほとんどゼロになる