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form drag

noun Physics.
  1. the portion of the resisting force encountered by a body moving through a fluid that is due to the irregularity of shape of the body, reducible to a minimum by streamlining.
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Origin of form drag

First recorded in 1930–35
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for form drag

form drag

noun
  1. the drag on a body moving through a fluid as a result of the shape of the body. It can be reduced by streamlining
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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