A fluid is a substance, such as a liquid or gas, that can continuously move and deform under an applied shear stress or external force. It includes substances that cannot resist shear forces and easily yield to pressure, changing their shape at a steady rate when acted upon by a force. Fluids can be classified as liquids, gases, or other materials that exhibit fluidic behavior. They can be further categorized as steady or unsteady, compressible or incompressible, and viscous or non-viscous based on their properties and behavior.
In addition to the physical definition, the term "fluid" can also be used in a different context, such as in gender identity. Gender fluidity refers to a person whose gender identity is not fixed and may change over time or from day to day. It is a form of gender identity or expression, rather than a sexual orientation, and it relates to how a person identifies themselves internally and presents themselves to the world. People who are gender fluid may identify as male one day, female the next, both male and female, or neither, affecting their gender expression.
In summary, the term "fluid" encompasses both the physical properties of substances that can flow and change shape, as well as the concept of gender fluidity, which describes a persons adaptable nature to the concept of gender identity and expression.
