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Wiktionary
ultramicroscopic

a. Too small to be seen with an ordinary microscope.

WordNet
ultramicroscopic

adj. too small to be seen without an ultramicroscope

Usage examples of "ultramicroscopic".

Similarly, the fabric of spacetime appears to be smooth except when examined with ultramicroscopic precision.

There are other physicists, however, who are deeply unsettled by the fact that the two foundational pillars of physics as we know it are at their core fundamentally incompatible, regardless of the ultramicroscopic distances that must be probed to expose the problem.

Like our fingers on granite, the string smears out the jittery ultramicroscopic fluctuations of the gravitational field.

And once again, this smearing results in a smoothing of the ultramicroscopic jitteriness of space as sub-Planck-length distances are blurred together.

Such is the universe described by string theory, in which we see that the laws of the large and the small can be harmoniously merged together as the supposed catastrophe arising on ultramicroscopic distances is summarily done away with.

By sequentially magnifying a region of space, its ultramicroscopic properties can be probed.

The doctor implanted an ultramicroscopic device, a sort of converter shaped to let the sperm enter at one end, pass easily through the cell wall, and sail through to the other end, snapped snugly over the egg nucleus.

I sensed the presence of multitudes of finer lines, dwindling into infinitude, ultramicroscopic, traced by some instrument compared to whose delicacy our finest tool would be as a crowbar to the needle of a micrometer.

Four months later, scientists at Hewlett-Packard reported they had crossed another key threshold by creating rows of ultramicroscopic conductive wires less than a dozen atoms across.

There was not only the omnipresent role of instrumentation in the envisioning of the ultramicroscopic fossil material, but also the metamorphosis over time of the material itself, both the DNA and its matrices, so that the data were invariably incomplete, and often shattered.

In this the individual body is a cloud of ultramicroscopic sub-vital units, organized in a common radio-system.

In fact, nothing about this whole foul planet - This ultramicroscopic, if offensive, speck of cosmic dust in the Eddorian Scheme of Things - really mattered at all.

And once again, this smearing results in a smoothing of the ultramicroscopic jitteriness of space as sub-Planck-length distances are blurred together.

Like our fingers on granite, the string smears out the jittery ultramicroscopic fluctuations of the gravitational field.

This was what science meant to them—after all, current physical theory spoke of ultimate reality as ultramicroscopic loops of string, moving supersymmetrically in ten dimensions.