How to pronounce “nugatory” in English

And these are the components, the strands that merge out of knot 5-- a lovely snowflake.A chain of nugatory rings with a half a twist come undone.An octagon embedded in its very circle.

But the top loop and the bottom loop with a half a twist come undone.That's known today as a nugatory knot.Of course, knot math was not invented in Leonardo's 15th century.