hierarchy of terms

hi·er·ar·chy of terms

in radiology, the semantic concept of using different terms to describe anatomic and pathologic structures and their differing terms on resultant diagnostic images.
References in periodicals archive ?
A look under Economic Factors shows a long hierarchy of terms covering such things as supply, demand, and cost; personnel issues; and legal considerations.
The Thesaurus can be used in three different ways: an alphabetical listing provides the full record for each descriptor, including its BT, NT, RT, and UF references; a hierarchical listing shows each descriptor in its place(s) in the hierarchy of terms based on BT/NT relationships; and a rotated (KWIC) listing shows each descriptor in alphabetical order by every word appearing in the term.