The voice right to refer to a student enrolled in the master's degree is master. It's a neologism that has not been incorporated into dictionaries. Completion when / nda is used to form nouns associated with verbal bases which have the sense of obligation ( examining means that it will examine ) or living in a process ( Americanism literacy means that it is in the process of literacy " ). Thus, master, and its variant female master, means the person who is in the process of being teacher ( obtain such title ).
According to the Mexican Academy of language is worth say that master is a neologism that referred to a student enrolled in the master's degree. In this case it is a noun f.singular. And add this source, with morphological reason, if the suffix - ND,-nda is used to express that it is " in 34 process; e.g.. ( our ) " 34 doctoral student; It is a student who is in the process of acquiring doctoral degree; in the same way that it would be " 34 Ph.d. student; Thus, the way female " 34 MASTER; It indicates as noun to a woman who is in the process of getting your degree or a degree in any masters title.