(mathematics) geometric mean, specifically, if the variables a, b, c satisfy the relation a:b=b:c, then b is the 幾何中項 of a and c.

a metatarsal bone

the Second Sino-Japanese War

Kyūjitai form of 営業中 (“open”)

天体物理学: astrophysics

continuing unchanged as long as there has been heaven and earth

an Emperor or Empress (regnant) of Japan / (usually in Chinese contexts) an emperor, ruler, or other monarch with a heavenly mandate

used for "spaces" in transcriptions, or as other separators

(linear algebra) transposed matrix

astronomer