I totally misinterpreted the opening post. I thought you wondered where the noun for etiolate was. It's etiolation, but now I see, after reading the posts, what you were really looking for. Vulgar Latin took many nouns and verbed them. The big difference between what happens in Latin and in English, is that English can verb nouns without modifying the form of the noun, whereas Latin has to add in some morphology.

Ceci n'est pas un seing.