Transient instance fields are neither saved nor restored by the standard serialisation mechanism. You have to handle restoring them yourself.
and the english (not technical) definition:
- one who stays for only a short time; "transient laborers"
- transeunt: of a mental act; causing effects outside the mind
- ephemeral: lasting a very short time; "the ephemeral joys of childhood"; "a passing fancy"; "youth's transient beauty"; "love is transitory but at is eternal"; "fugacious blossoms"...