In physics, people very often measure some values which depend on some variable, say the air temperature as a function of time. I think the verb depend is used correctly, since dictionaries define "dependent variables" and "independent variables". The resulting data (mostly shown in graphs) reflect something which mathematicians use to call a function (which would have a rigorous definition), but since the measurement involves often numerous parameters, physicists commonly call the result a dependence.
Is this correct? I have not found any dictionary definition of "dependence" which would express this relation between the imposed variable and the result.
The plural seems even more problematic. One may measure the air temperature and humidity in parallel. Is it then correct to say that the given graph contains these two dependences? Dictionaries say "dependence" is a mass noun, so there would be no plural. The plural can be found in Wiktionary, but without any explanation. Or should we use the word dependencies? For "dependencies" I can not find a suitable dictionary definition either.