历时

Traditional form:

歷時

Pinyin (reading):

lìshí

Definitions:

• to last
• to take (time)
• period
• diachronic

Characters:

• 历 - history; calendar
• 时 - time, season; period, era, age

Traditional characters:

• 歷 - history; calendar
• 時 - time, season; period, era, age