In Galician grammar, the theory of articles is an essential component for proper understanding and usage of the language. Articles are used to specify and introduce nouns, indicating whether they refer to a specific or non-specific entity.

Galician has definite and indefinite articles, similar to many other Romance languages. The definite article “o” is used to indicate a specific noun in the masculine gender, while “a” is used for a specific noun in the feminine gender. These articles also have plural forms, “os” and “as”, for masculine and feminine nouns, respectively.

The indefinite articles “un” and “unha” are used for non-specific nouns in the singular form, but there are some exceptions based on the phonetic characteristics of the noun.

Additionally, Galician has a partitive article “de”, which is used to express an indefinite quantity or part of something. This article is often used in combination with a preposition, such as “de o” or “de a”.

Overall, understanding and correctly using articles in Galician grammar is fundamental for both written and spoken communication.