noun (sometimes initial capital letter)
Also ta·chisme [French ta-shees-muh] /French taˈʃis mə/.
Origin of tachism
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a type of action painting evolved in France in which haphazard dabs and blots of colour are treated as a means of instinctive or unconscious expression
Word Origin for tachisme
C20: French, from tache stain
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012