smear

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smear

a preparation of blood, secretions, etc., smeared onto a glass slide for examination under a microscope
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

smear

[smir]
(biology)
A preparation for microscopic examination made by spreading a drop of fluid, such as blood, across a slide and using the edge of another slide to leave a uniform film.
(electronics)
A television-picture defect in which objects appear to be extended horizontally beyond their normal boundaries in a blurred or smeared manner; one cause is excessive attenuation of high video frequencies in the television receiver.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in classic literature ?
All the signs visible--signs which told that the paint had been smeared by some loose article of somebody's dress touching it in going by.
With a yellow-ochre paint cake he smeared the legs and the breast, great streaks against the background of flour, ash, and turmeric.
We had traversed the entire way without mishap or adventure, and though the few we had met had eyed the great calot wonderingly, none had pierced the red pigment with which I had smoothly smeared every square inch of my body.