纵深

Traditional form:

縱深

Pinyin (reading):

zòngshēn

Definitions:

• depth (from front to rear)
• depth (into a territory)
• span (of time)
• (fig.) depth (of deployment, progress, development etc)

Characters:

• 纵 - to indulge in, to give free reign to
• 深 - deep, profound; depth

Traditional characters:

• 縱 - to indulge in, to give free reign to
• 深 - deep, profound; depth