西せい進しん

noun, noun or participle which takes 'suru', intransitive verb

proceeding west; advancing westward

Used for movement, expansion, or progress toward the west. Often appears in historical, geographical, or strategic contexts. The intransitive する form is common.

See also: 東進

• 台たい風ふうはゆっくりと西せい進しんしている。

  The typhoon is slowly moving westward.

• 開かい拓たく者しゃたち