Here is the one thing that our pronunciation editor wishes everyone knew: those dots in the headwords, like at “co·per·nic·i·um,” are not marking syllable breaks, as is evident by comparing the placement of the dots with the placement of the hyphens in the pronunciations. Those dots are called “end-of-line division dots,” and they exist solely to tell beleaguered proofreaders where, if they have to split a word between lines, they can drop a hyphen.