The morpheme is the basic morphological notion.
The central notion of Morphology is a morpheme. The problem of definition the morpheme is still under discussion.
The most general notion it’s very difficult to define.
Виноградов gives the following definition.
Morphemes are segments possessing each a certain meaning in the given language. Semantically they are considered to be indivisible.
Ильишь defines morphemes the smallest meaningful unites in to which a word – form may be divided.
E. g. Consists of 3 morphemes W I I T lexical morpheme.
Secondly expresses the idea of an agent perfoment the action indicated the root morphemes.
Grammatical aspect:
Finally: s indicates the number it is a grammatical morpheme.
О. С. Ахманова in the dictionary
Морфема (морфологическая единица) – (связанная форма), наименьшая(предельная), неделимая далее без потери данного качества и регулярно воспроизводимая согласно моделям данного языка, единица системы выражения, непосредственно соотносимая, соответствующая элементам системы содержания.
E. g.: In the forms are not repeated
Смород ина – huckle berry - черника
Мал ина
A morpheme is an element or an unite(or a form) which no bears no partial phonetic, semantic resembles to any other form which being recorrect and structure.
Ахманова: a morpheme is a recorrect word.
E. g. write, writing, written phrases, writing desk
A some different conception of the approach to the morpheme may be found in the scholars. A morpheme in their opinion is not one concrete unite but a whole set of variants called allomorphs.
The morpheme of the PL of the noun consists of several: [s] [z] [iz] after voiceless consonants