An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

1) To incorporate (the cultural values, mores, motives, etc., of another or of a group), as through learning, socialization, or identification (Dictionary.com).
2) Linguistics: To acquire (a linguistic rule, structure, etc.) as part of one's language competence (Dictionary.com).

→ internal + → -ize.