1. A grammatical phenomenon in which no article (definite or indefinite) precedes a noun, either as a characteristic feature of a language or as an omission in a particular construction
In Russian, the absence of article makes it a null-article language.
Em russo, a ausência de artigo torna uma língua de artigo nulo.
2. The zero article or null article in linguistic analysis, particularly when examining noun phrases without determiners
The absence of article in 'I like cats' is grammatically correct in English.
A ausência de artigo em 'Gosto de gatos' é gramaticalmente correta em português.