The field of forestry has evolved rapidly in the last several decades to encompass the sustainability and conservation of forest resources uses and values. It can be argued that any field of science and management could be legitimately included provided it has the word forest as a prefix. In addition to "conventional" foresters we now have urban foresters, agroforesters, international foresters, and industrial foresters. To accommodate this broadening there has been an enormous increase in vocabulary needed by those who must communicate technically and accurately on forest resource issues. This broadening has led to growing debate on the →definition of such familiar→terms forest, forestry, and forester. Examples are given of earlier and current →definition of these and other →terms. The compilers of forest →terminologies need to develop guidelines determining what →terms should be included while ensuring that the →terminology follows the profession, reflects current usage, and enables precise and clear communication. In adapting to change, forestry although an international →concept is likely to increase in regional interpretation.