* Microscopic: DNA is incredibly small, only visible with the aid of powerful microscopes. It's about 2 nanometers in diameter, which is about 100,000 times smaller than the width of a human hair.

* Macroscopic: This term refers to objects large enough to be seen with the naked eye. DNA molecules are far too small to be seen this way.

* Particulate: This term refers to tiny particles of matter. While DNA is composed of particles (atoms and molecules), the term usually refers to something like dust or grains of sand.

In summary: DNA is a microscopic molecule, meaning it is too small to be seen without a microscope.