noun, noun which may take the genitive case particle 'no'
trial period; probation period; evaluation period
Used for a fixed period during which a new employee's performance is evaluated, or for a trial period of software or a service.
新入社員には3か月の試用期間がある。
New employees have a three-month probation period.
このソフトは試用期
This software has a 30-day trial period.