Where does “introduccyon” come from?

introduccyon (Middle English) comes from Old French introduction, from Latin introductionem, from Latin intrōductiō, from Latin intrōdūcō, from Latin intrō, from Latin intra, from Latin interus, from Proto-Indo-European h₁énteros — Contrastive or oppositional adjectival suffix.

Ancestry of “introduccyon”, step by step

StepLanguageWordMeaning
1Old Frenchintroduction
2Latinintroductionemaccusative singular of intrōductiō
3Latinintrōductiōinnovation
4Latinintrōdūcōto lead in: to conduct into
5Latinintrōto enter, go into, come in, get in, penetrate
6Latinintrawithin; inside; during; less than
7Latininterus
8Proto-Indo-Europeanh₁énterosinside, within
9Proto-Indo-European-terosContrastive or oppositional adjectival suffix
Every word from Proto-Indo-European -teros