急性期 きゅうせいき Meanings Noun acute phase See also: 慢性期 (まんせいき). Kanji 急 sudden. Read as キュウ. 性 nature. Read as セイ. 期 period. Read as キ. Words containing 急性期 急性期病院 (きゅうせいきびょういん) acute hospital Word lists Medicine Jinuma: Japanese Dictionary · Word lists