IPA: /ˈnætʃəraɪz/
KK: /ˈnætʃərəlˌaɪz/
To make something natural or to adapt it to a natural state; also refers to the process of granting citizenship to a foreigner.
He decided to naturalise in the country after living there for several years.
Past: naturalised
Past Participle: naturalised
Naturalise → It is formed from "nature" (from Latin *natura*, meaning birth or nature) and "-ise" (a suffix used to form verbs indicating a process). The word "naturalise" means to make something conform to the nature or characteristics of a particular place or environment.
Think of 'nature' as the essence of something, and remember that to 'naturalise' means to make something fit or belong to that essence.