1. grants citizenship to a foreign-born person
Usage: third person singular present; British spelling
2. becomes a citizen of a country other than one’s birth country
Usage: third person singular present; British spelling
3. introduces and establishes a plant or animal in a region where it is not native
Usage: third person singular present; British spelling; biology

Examples

• The government naturalises thousands of immigrants each year.
• She naturalises as a British citizen after living there for five years.
• The gardener naturalises wildflowers in the meadow.
• This species naturalises quickly in temperate climates.
• The documentary naturalises complex scientific concepts for general audiences.
• Time naturalises even the most shocking social changes.