迹线

Traditional form:

跡線

Pinyin (reading):

jìxiàn

Definitions:

• trajectory

Characters:

• 迹 - trace, sign, mark, footprint
• 线 - line, thread, wire; clue, trail

Traditional characters:

• 跡 - trace, sign, mark, footprint
• 線 - line, thread, wire; clue, trail