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by 1-more 916 days ago
The sciences are full of new-latin and neo-greek formations like Biology and Astronomy. So reaching back the the original meaning of occult "to hide (from)" isn't that big a stretch. Especially when "occlude" comes from a word meaning "to shut (away)" and an eclipse isn't shutting the sun away, just hiding it. The Mahdi isn't just standing behind something, he's hidden away in another plane. That's why he's the occluded imam.

But also occlude has a chemistry meaning when one substance gets hidden inside another, so maybe it was too overloaded to be a good word for that.