The word "more petrous" is spelled with three syllables, and the stress is on the second syllable: /mɔːr ˈpɛtrəs/. The first syllable, "more," rhymes with "core" and the second syllable, "pe," rhymes with "key." The third syllable, "trous," rhymes with "roused." The word "petrous" means relating to or resembling rock or stone, and the word "more" means a greater amount or quantity. Therefore, "more petrous" means something that is even more rock-like or stony than something else.
The word "more petrous" does not have a clear etymology, as it seems to be a combination of the morphemes "more" and "petrous".
The term "more" does not seem to have a direct association with the term "petrous" in the context of etymology. "More" is a comparative adverb meaning "to a greater extent" or "to a higher degree". It typically does not have a specific origin and is derived from Middle English and Old English.
On the other hand, "petrous" is derived from the Latin word "petrosus", which means "rocky" or "stony". It is related to the Greek word "petra", meaning "stone". In English, "petrous" is primarily used in medical or anatomical terms to describe parts of the body that are hard or stony in nature.