Amoeba

noun
  1. A single-celled organism of the genus Amoeba, characterized by its shapeless, flexible body that moves and engulfs food through the extension of pseudopodia (temporary projections of cytoplasm). Amoebas are found in water and soil environments and are often studied in biology as a model for cellular processes. noun
    The scientist observed an amoeba under the microscope as it changed shape and moved.
    Amoebas play a crucial role in the ecosystem by consuming bacteria and other small particles.
  2. A term used metaphorically to describe a person or thing that is shapeless, amorphous, or lacking definite form or structure. noun
    The organization was a complete amoeba, with no clear leadership or direction.
    His ideas about the project were so vague they resembled an amoeba—without any clear boundaries or shape.