màgìnẹ́síọ̀ noun /mà.ɡì.nɛ́.sí.ɔ̀/
Definitions
  1. magnesium (chemical element, Mg, atomical number 12)
Etymology
From English magnesium.
Source: Wiktionary, where this word is spelled “maginẹsiọ”. Reference: en-maginẹsiọ-yo-noun-siE15Qzk