It is alike that ה is the article. If so, what about מאפיין?
We have here a word consisting of four root letters. We know that Oham deals with words of one, two or three root letters, those consisting of four root letters are not studied.
Dictionary has אִפְיֵן, to characterize, distinguish.
We have here its Participle singular masculine: (male) who characterizes, (male) distinguishing.
And so, the (male) who characterizes.