The noun 世界性 (shìjièxìng) means "worldwide" or "of a global nature." The suffix 性 turns the noun 世界 (world) into a descriptor indicating scope or character. For example, 世界性的美食 means "a globally recognized cuisine."
气候变化是一个世界性的问题。
qìhòu biànhuà shì yí gè shìjièxìng de wèntí.
Climate change is a global problem.
这场疫情已经成为世界性的危机。
zhè chǎng yìqíng yǐjīng chéngwéi shìjièxìng de wēijī.
This pandemic has become a worldwide crisis.
足球是一项世界性的运动。
zúqiú shì yì xiàng shìjièxìng de yùndòng.
Soccer is a worldwide sport.