As an ending of participles or participial adjectives its equal to -ed
As ending of a verb, this means which will make, resulting in, to do something, etc.
As a noun suffix, it marks the agent. It also often marks the office or dignity.
In biochemistry its always denote the salts created from those acids whoever brands end -ic (excepting binary or halogen acids); additionally it is found in the actual situation of particular fundamental salts.