What is Islam?
The Arabic word Islam الاسلام is derived from a word, which is also used to derive these words:
Silm سلم (Peace: al-Baqara 2:208).
Taslim تسليم (Voluntary self-surrendering only to Allah: al-Baqara 2:112, 131).
Salama سلامة (Eternal salvation: al Imran 3:104).
Using these three terms, one could state the following:
Islam is a way, which requests surrendering to Allah (taslim) for getting peace on earth (silm) and eternal salvation (salama) in the hereafter.