The "ㅇ" and "ㅅ" in the University arms are derived from the first letters of "연세" ("Yonsei" in Korean).
The circle "ㅇ" represents the ideal of a complete and well-rounded person, while the "ㅅ" symbolizes the upward-looking pursuit for scholarly excellence.
In addition, the "ㅇ" stands for Heaven; the "-" represents the horizon of the Earth and "ㅅ" signifies "man," as expressed in the Chinese character (人).
The open book stands for truth; the torchlight signifies freedom; and the arms, as a whole, protects these two core principles of the university.