A fear or dislike of leaving empty spaces, especially in an artistic composition
الإنجليزية - الإنجليزية
تعريف horror vacui في الإنجليزية الإنجليزية القاموس.
In physics the horror vacui stands for a theory initially proposed by Aristotle stating that nature "fears" empty space. Therefore empty space would always be trying to suck in gas or liquids to avoid being empty. The theory was for a long time widely accepted and still supported by Galileo Galilei. His pupil Evangelista Torricelli stated in 1644 that the level of mercury in a closed tube was dependent on the pressure of surrounding air. In 1647 Blaise Pascal proved this notion in his famous vide dans le vide ("emptiness in emptiness")-experiment. The Magdeburg Hemispheres by Otto von Guericke were in 1650 further proof that Aristotle's theory was not correct. (see more on this topic in history of thermodynamics)
A fear or dislike of leaving empty spaces, especially in an artistic composition