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The Collaborative International Dictionary
Dimensionless

Dimensionless \Di*men"sion*less\, a. Without dimensions; having no appreciable or noteworthy extent.
--Milton.

Wiktionary
dimensionless

a. 1 lacking dimensions 2 (context science English) of a physical constant, lacking units.

Wikipedia

Usage examples of "dimensionless".

It was a dimensionless point of light, as if a star had been clawed from the sky by one of those cruel peaks, and I imagined that some smooth rock surface was catching the sunlight and heliographing it straight into my eyes.

We all stood in the bee-loud field and witnessed the cautious coming-out of a black Aberdeen yearling, as demure and dimensionless in the trailer as midnight itself.

Out in space, a star is a hard, brilliant, dimensionless point of light.

Points, tiny dimensionless points of light, save one, a tiny disc of blue-white flame, old Sol from a distance of close to one billion miles, and under slight reverse magnification.

The bulkheads were invisible beneath a dimensionless field of fierce, gray-purple light.

In that dimensionless obscurity there was only here and now, an endless present and everything within reach.

They could make out the vague outlines of a vast, dimensionless room without any observable walls or floor or ceiling.

Slowly at first, faster, faster, it drew away, shrank toward infinity as it dissolved into the dimensionless whiteness.

The wormhole pocket will not only be nonlinear in time the way its two fragments were, it will also become dimensionless in space.

It was a dimensionless point of light, as if a star had been clawed from the sky by one of those cruel peaks, and I imagined that some smooth rock surface was catching the sunlight and heliographing it straight into my eyes.

They could deduce from the dimensionless points of light the glowbirds became when festooning the ceiling that it was at least a kilometer high, possibly more.

Unless they be Moons or Planets, possessing Diameter, each exists as but a dimensionless Point, a simple pair of Numbers, Right Ascension and Declination.