Does it mean 'many' or 'small amount'? Interestingly the words significant and fraction have opposite meanings as far as I know, and yet they create a compound word.
Significant fraction of CO2 emissions from boreal lakes derived from
hydrologic inorganic carbon inputs.
Best Answer
significant just means meaningful. The amount to be considered meaningful requires additional information. For example:
It was significant because many children got lead poisoning. But you can't say how much lead that is without additional information.