Duoettertium!

I've discovered Duoettertium!

The first person who can decode this word gets a cookie. :)

I don't speak Latin

But that is a step in the right direction.

Homus Sapiens

That is a step in the wrong direction.

two something
Two girls?
A duo of girls?

I'm assuming the picture was chosen for that reason

...

Getting closer, but people already knew about that one.

Is it a new element or an existing one?

Ok, then 203 (et for zero).

Oops, getting colder.

127

deuterium

Well? Was I right OP?

Afraid not. Think about the quarks.

I think I got it.

This is an +18 website, Honoka. Get out.

Dog Latin (two and a third) points to proton or neutron.

Very close. 2 1/3 is correct.

In proper Latin, 2 1/3 would be called duo et tertiarium. Tertium means 'a third', as in tertium non datur (no third option). If memory serves..

I think I'm going to call it solved here. There are hypothetical particles that can have +1/3 or +4/3 charge. If you could put one of these in the nucleus of the atom, you would have a new element not found on the periodic table.

Element 2 1/3 would have atoms that cluster in groups of three, sharing 7 electrons between them.