DictionaryRoot: cristnian
Old English
cristnian
to baptize, make Christian
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verb
christen
KRIS-en/ˈkrɪsn/
To mark the beginning of use or membership through naming or baptism.
Etymology
Cristnian meant to baptize, literally to make Christian. Because baptism included giving an infant a name, the verb broadened to naming someone or something without requiring baptism.