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1. To climb up something. How long do you think it will take us to scale up the mountain?
2. To increase something in size. In this usage, a noun or pronoun can be used between "scale" and "up." With this sudden increase in funding, we can finally scale up our research project! Can you scale up this drawing? I'd love to have a model to present to the board.
1. To climb up something; ascend something: The hikers scaled up the side of the mountain.
2. To increase the scope or extent of something according to a standard or by degrees; increase something in calculated amounts: The company scaled up its operations to meet the growing demand. The city scaled its efforts up to reduce crime.