irúnmọlẹ̀ noun /ī.ɾṹ.mɔ̃̄.lɛ̀/
irúnmalẹ̀ (alternative)
Definitions
  1. primordial spirits in Ìṣẹ̀ṣe, they are the first group of four hundred and one deities (imọlẹ̀) created after the creation of the world and the ones who live in the sky with Olodumare, such as Ògún, Èṣù, Ọ̀rúnmìlà, Ọbàtálá, and Olókun.
    Humans chosen or inhabited by the imọlẹ̀ are known as òrìṣà
    àgbà irúnmọlẹ̀ ni Ògún Ogun is a senior primordial divinity
  2. earth spirit
Etymology
From blend of irún + imọlẹ̀, ultimately from irún (“four hundred”) + i- (“nominalizing prefix”) + mọ (“to mold, to shape”) + ilẹ̀ (“land”), literally “The four hundred creators of the land”.
Component words
Wiktionary records 2 different ways of breaking this word down. Each line is one of them, not a further part.
Source: Wiktionary, where this word is spelled “irunmọlẹ”. Reference: en-irunmọlẹ-yo-noun-OPrcOPlO