What Do These Course Abbreviations Mean?

What about the missing numbers?

¶ Course XIII, Ocean Engineering, became part of Course II, Mechanical Engineering, effective in 2005.

¶ Course XIX was Metallurgy from 1936. Within a few years, it became part of Course III, and shortly thereafter the number was reused for Meteorology. Course XIX was Meteorology until 1981, when it became Meteorology and Physical Oceanography. In 1983 it became part of Course XII. Colloquially, “Course 19” is sometimes used to mean “applied mechanical engineering.”

¶ Course XXIII first offered a PhD in modern languages in 1961, according to Tech reporting. Course XXIII became the department of Modern Languages in 1965 and the Department of Foreign Languages and Linguistics in 1969. A 1976 reorganization eliminated Course XXIII.

¶ MIT once had a Course XXV, Interdisciplinary Science; it was active from 1971–1982, according to a list compiled by Everett L. Butcher ’77 and available online at sandiego/contents_courses.shtml.

Abbrev. Department or Course Name
1 Civil and Environmental Engineering
2 Mechanical Engineering
3 Materials Science and Engineering
4 Architecture
5 Chemistry
6 Electrical Engineering and Computer Science
7 Biology
8 Physics
9 Brain and Cognitive Sciences
10 Chemical Engineering
11 Urban Studies and Planning
12 Earth, Atmospheric, and Planetary Sciences
14 Economics
15 Management
16 Aeronautics and Astronautics
17 Political Science
18 Mathematics
20 Biological Engineering
21 Humanities, Arts, and Social Sciences
22 Nuclear Science and Engineering
24 Linguistics and Philosophy
CDO Computation for Design and Optimization
CMS Comparative Media Studies
CSB Computational and Systems Biology
ESD Engineering Systems Division
HST Harvard-MIT Division of Health Sciences and Technology
MAS Media Arts and Sciences
OR Operations Research
PEP Professional Education Programs
RED Real Estate Development
SDM System Design and Management
STS Science, Technology, and Society