While there is tremendous growth in practices and programs that use the arts in support of health worldwide, there are significant inconsistencies in terminology used to reference the discipline. These inconsistencies are challenging for professionals within and outside of the field, and particularly so for educators. Inconsistent terminology makes it difficult for practitioners, educators,funders, policy-makers, service users, and the general public to define and reference the discipline, and decades into its formal development, continues to impede progress. Clear, consistent, and descriptive language is a critical aspect of professional conduct, as boundaries are established in equal parts through ethical practice and clear terminology.