What does "above-threshold" mean?
There's a threshold, a condition that needs to be fulfilled and then an action is insued. Sometimes, it's what's below the threshold, but other times, it's what's above the threshold, the standard. I wonder how this is used. Are there any specific phrases containing threshold like "above-threshold" that has this meaning?

E.g. Water becomes ice when reaching 100 degree celcius, and becomes vapor when reaching below 0 degree celcius.

Thanks very much.

Question

What does "above-threshold" mean?
There's a threshold, a condition that needs to be fulfilled and then an action is insued. Sometimes, it's what's below the threshold, but other times, it's what's above the threshold, the standard. I wonder how this is used. Are there any specific phrases containing threshold like "above-threshold" that has this meaning?

E.g. Water becomes ice when reaching 100 degree celcius, and becomes vapor when reaching below 0 degree celcius.

Thanks very much.

Answer

A threshold is a boundary or a limit.  Use the dictionary to look up this word.
Above-threshold means "above the threshold or limit".  Guess what "Below-threshold" means.

This is very straight-forward.  What is confusing you about "threshold"?

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