The term "submersible" refers to something that is capable of being completely immersed in a liquid, without sinking or being damaged. This can refer to objects such as submarines, which are designed to operate underwater, or other devices like remote-operated vehicles (ROVs) and undersea cameras that can withstand the pressure of deep water. The word "submersible" is also used in a broader sense to describe anything that can be hidden or kept out of sight, such as an idea or concept that can be submerged beneath other thoughts or feelings.