Romulan UK /ˈrɒmjʊlən/US /ˈrɑmjʊlən/adjective 1noun 1forms 3 adjective1 •Pertaining to the fictional extraterrestrial race, or its fictional polity, the Romulan Star Empire; from Star Trek. noun1 •A member of a fictional alien race, described as being cunning and opportunistic."Some sort of Romulan game," Riker said thoughtfully. "Trying to make us guess what they're up to." — 1999 formsRomulans · more Romulan · most Romulan