Ph.D.: Doctor of Philosophy. (From the New Latin, philosophiae doctor). Ph.D.'s are involved in clinical care (as in clinical psychology), biomedical research (as in the Genome Project), health administration and other areas in medicine. Found on http://www.medterms.com/script/main/art.asp?articlekey=4865
PhDnoun an American doctorate usually based on at least 3 years graduate study and a dissertation; the highest degree awarded by a graduate school Found on https://www.encyclo.co.uk/local/20974