Please answer a question about the following article about Christian:

The Greek word Χριστιανός (Christianos), meaning "follower of Christ", comes from Χριστός (Christos), meaning "anointed one", with an adjectival ending borrowed from Latin to denote adhering to, or even belonging to, as in slave ownership. In the Greek Septuagint, christos was used to translate the Hebrew מָשִׁיחַ (Mašíaḥ, messiah), meaning "[one who is] anointed." In other European languages, equivalent words to Christian are likewise derived from the Greek, such as Chrétien in French and Cristiano in Spanish.

Where does the Greek word Χριστιανός (Christianos) come from?
Χριστός (Christos)