Etymologically, the word tour is derived from the Latin, ‘tornare’ and the Greek, ‘tornos’, meaning ‘a lathe or circle; the movement around a central point or axis’. This meaning changed in modern English to represent ‘one’s turn’.
The suffix –ism is defined as ‘an action or process; typical behaviour or quality’, while the suffix, –ist denotes ‘one that performs a given action’. When the word tour and the suffixes –ism and –ist are combined, they suggest the action of movement around a circle. One can argue that a circle represents a starting point, which ultimately returns back to its beginning. Therefore, like a circle, a tour represents a journey in that it is a round-trip, i.e., the act of leaving and then returning to the original starting point, and therefore, one who takes such a journey can be called a tourist.”*