In a brief survey of the theoretical description presented in Czech linguistics to date, as well as on the basis of excerpts form contemporary written specialized medical texts in confrontation with specialized medical (explanatory and translation) dictionaries, this contribution outlines the problems and typology of multiple-word terms (and collocations) generally. Through the differentiation of specialized collocations in the vocabulary and in the text (with a personal proposal for terminological differentiation of both instances) we have characterized the present state of Czech terminology and specialized communication with our focus on Czech medical terminology (with and indication of a confrontational and historical approach). Analysis has confirmed that, as a source of contemporary dynamics of terminology, internationalization of terminology is also playing an ever greater part, along with the actual development of scientific understanding.