Shouldn't it be 'an dhúil' since 'dúil' is feminine, or does an initial 'd' not take a séimhiú in this context?
It doesn't take it in this context, because of the DNTLS DTS rule. (Basically, because 'd' comes right after 'n')
Ah, of course. Thanks, Galaxyrocker.
I think one could also say eilimint
For the electrical, mathematical, biological, and religious meanings of “The element”, An eilimint could be used.