Verb (1-dan, intransitive)
1. to pass; to elapse; to go by
しかし、その世界は長い時を経て変わってしまった。However, that world has changed over a long period of time.
2. to pass through; to go through
そしてそこへ行くには、地下駐車場を経る必要がある。And to get there, it is necessary to pass through the underground parking lot.
3. to experience; to go through; to undergo
病気を経て彼女も変わったのだろうか。Having gone through illness, has she changed as well?