上じょう弦げん

noun

first quarter moon; waxing half-moon

Astronomical term for the moon phase when the right half is illuminated in the northern hemisphere. Often contrasted with 下弦 (last quarter).

See also: 下弦

• 今こん夜やは上じょう弦げんの月つきが見みえる。

  Tonight we can see the first quarter moon.

• 上じょう弦げんの月つきは夕ゆう方がたに南みなみの空そらに見みえる。

  The first quarter moon appears in the southern sky in the evening.