ìmọ̀ ìṣirò noun /ì.mɔ̃̀ ì.ʃī.ɾò/
Definitions
  1. mathematics, arithmetic
Etymology
From ìmọ̀ (“knowledge”) + ìṣirò (“mathematics”).
Component words
ìmọ̀knowledgeìṣiròmathematics
Source: Wiktionary, where this word is spelled “imọ iṣiro”. Reference: en-imọ_iṣiro-yo-noun-HsRN8J1c