The story
- Proto-Indo-European*h₁én
- Proto-Italic*en
- Proto-Italic*en-
- Latinin-
- Proto-Indo-European*kleh₂w-
- Proto-Italic*klaudō
- Latinclaudō
- Latininclūdō
- Latininclūsiō
- English todayinclusion
Borrowed from Latin inclūsiō, inclūsiōnis, from the verb Latin inclūdō (“to shut in, enclose, insert”), from in- (“in”) + claudō (“to shut”), ultimately from Proto-Indo-European *kleh₂w- (“key, hook, nail”). By surface analysis, include + -sion. Doublet of enclosure.
Words from the same roots
Latininclūdō all →
encloseincludence
Etymology from Wiktionary, CC BY-SA 4.0.