In the context of the excerpt "Bound by a spine strong enough to hold entire worlds" from the text "Binding Memories," the denotation of the word "strong" is:
1. Powerful: The word "strong" in this context conveys the idea of immense power or strength. It suggests that the spine being described is robust and sturdy enough to support or carry significant weight, such as entire worlds.
Therefore, the denotation of "strong" in this context primarily means powerful or having great strength. It emphasizes the durability and capability of the spine to endure and bear substantial loads.