The spelling of "celo-navigations" can be explained using the IPA phonetic transcription. "Celo" is pronounced as /ˈsɛl.oʊ/ with emphasis on the first syllable, while "navigations" is pronounced as /ˌnæv.ɪˈɡeɪ.ʃənz/ with emphasis on the third syllable. Together, the word is pronounced as /ˌsɛl.oʊ.næv.ɪˈɡeɪ.ʃənz/. The word blends "celo-" which refers to the heavens, and "navigation" which refers to the act of directing or guiding a ship or aircraft. Therefore, "celo-navigations" can be understood as the act of guiding a vessel through celestial means.