Dictionary/外界がいかいGaikai外界 (Gaikai) is a Japanese noun meaning “outside world, physical world”.Meaningsnoun, adjectival nounoutside world; physical worldKanji in 外界外outside界worldRelated words世界the world外outside他another place余所another place外outside ...他にelse以外excluding意外unexpected外すto remove法外exorbitant海外foreign限界limit