approximation noun
ADJ. close, good, nearest, reasonable This is the nearest approximation of cost that they can give us. | crude, rough This is only a crude approximation of the actual conditions in the area.
VERB + APPROXIMATION make We do not have the true figures so we will have to make some approximations. | give (sb), provide (sb with)
You can also check other dicts: approximation (English, 中文解释 ), wordnet sense, Collins Definition