Doctor of Science.
1. Doctor of Science in Hygiene.
1. Doctor of Medical Science.
abbreviation (in Scotland) 1. Scottish Certificate of Education: either of two public examinations in specific subjects taken as school-leaving qualifications or as qualifying examinations for entry into a university, college, etc See also higher (sense 2), O grade
noun 1. a silver Anglo-Saxon coin of the 7th and 8th centuries, sometimes including an amount of gold.