14-Letter Words Containing: CROS_

• Smaller than microscopic; too small to be seen even with a microscope

• A case, capsule or container that holds microspores.

• The gross structure of a material or tissue as visible to the unaided eye or at very low levels of magnification.

• The gross structure of a pure metal or alloy, as revealed by magnifications of 10X or less.

• The fine structure of a material or tissue as revealed by microscopy.

• The fine structure of a pure metal or alloy, as revealed by magnifications of 25X or greater.

• Fine-scale structure in such variables as temperature, salinity, velocity, etc.

• surgery using operating microscopes and miniaturized precision instruments to perform intricate procedures on very small structures