The movement of a dendritic cell in response to an external stimulus. [ http://purl.obolibrary.org/obo/CL_0000451 https://www.worldcat.org/search?q=bn%3A0781735149 http://www.ncbi.nlm.nih.gov/pubmed/16056255 http://www.ncbi.nlm.nih.gov/pubmed/15814331 GOC:add ]