A period when things move into a different state or phase; a turning point or transitional phase for an individual, society, or organization.
大学卒業後は仕事や生活が大きく変わる、人生の転換期だ。
After graduating from university is a turning point in life when work and lifestyle change significantly.
業界全体がデジタル化の転換期にあり、企業も対応を迫られている。
The whole industry is in a transition to digitalization, and companies are being forced to respond.
結婚や出産は多くの人にとって生活の転換期になる。
Marriage and childbirth are turning points in life for many people.