The paper focuses on the lexical typology of dimensional terms such as English long, deep, wide, etc. Compared to other semantic fields, this one is relatively well-studied; however, the present study is the first to approach it from the modern typological point of view. We propose a semantic map of dimensional terms, which outlines the possible and impossible colexification patterns in the domain. However, other regularities appear likely to exist, which cannot be captured by the model of semantic mapping. We discuss the potential restrictions on colexifications, and suggest explanations for them.