dirigible, blimp

Sesquiotica

What’s the difference between a dirigible and a blimp?

They have the same general form, but you don’t want to be misled. It’s tempting to assume, as I did for so many years, that the difference between the airships is visible when they’re deflated: a dirigible is rigid and a blimp is limp. It just seems so obvious, no?

Obvious but wrong. Similarity is not identity. Hydrogen and helium can both keep an airship aloft, but if you choose the wrong one you can go down in flames.

The truth is that a blimp is a dirigible. But not all dirigibles are blimps.

One may be forgiven for seeing rigid in dirigible, but I can see gerbil in it too and yet I am confident that airships are not held aloft by rodents running on wheels. Likewise, the presence of dirge, bridge

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