sub‧mer‧si‧ble /səbˈmɜːsəb
əl, səbˈmɜːsɪb
əl $ -ˈmɜːr-/
noun [countable] a small vehicle that can travel under water, especially one that travels to very great depths in the ocean for scientific purposes
—submersible adjective [TahlilGaran] Dictionary of Contemporary English ▲