保长

Traditional form:

保長

Pinyin (reading):

bǎocháng

Definitions:

• (math.) distance-preserving
• isometric

Characters:

• 保 - to safeguard, to protect, to defend, to care for
• 长 - long, lasting; to excel in

Traditional characters:

• 保 - to safeguard, to protect, to defend, to care for
• 長 - long, lasting; to excel in