I work and write for a tech company that has created many first-in-the-world technologies. In press releases, I often write something like “[Company name] today announced another world’s first with the development of [new technology].” My question has to do with talking about these technologies collectively, as in a sentence like: “These world’s first technologies have made [company name] a leader in the industry.”
When “world’s first” is used as an adjective phrase, are there any rules dictating the use of the apostrophe? Should it be “world’s first technologies” or “world-first technologies”?
An acquaintance believes “world-first technologies” is correct, but that just doesn’t sound right to me. I didn’t find anything that addresses this particular (admittedly persnickety) quandary in my Chicago Manual of Style (15th edition) or online. Any and all insight would be welcome and appreciated.