noun
under ... circumstances; under ... conditions; in a ... situation
Attaches to an adjectival phrase to describe the circumstances or conditions under which something occurs. Often used in formal or written contexts.
緊迫した状況下で冷静な判断が求められる。
Calm judgment is required under tense circumstances.
厳しい状況下でも彼は希望を失わなかった。
Even under harsh conditions, he did not lose hope.
Compound of 状況 (situation) + 下 (under). The reading じょうきょうか follows standard on'yomi.