It's really difficult nowadays to find a brand name that looks and sounds tolerable, and that doesn't mean anything negative or silly in any language that potential clients may speak, which someone else hasn't already taken and trademarked, and for which the essential domain name is available (cirium.com in this case).
Cirium itself is owned by a conglomerate called RELX Group, so it's not obvious why they needed to spend money and time creating this mid-level brand. Most likely it's just a way to create some new highly-paid top management positions, since RELX Group's board has only two executive directors.