9 Grammatical Pitfalls


[blo-keyd] /blɒˈkeɪd/
the isolating, closing off, or surrounding of a place, as a port, harbor, or city, by hostile ships or troops to prevent entrance or exit.
any obstruction of passage or progress:
We had difficulty in getting through the blockade of bodyguards.
Pathology. interruption or inhibition of a normal physiological signal, as a nerve impulse or a heart muscle–contraction impulse.
verb (used with object), blockaded, blockading.
to subject to a blockade.
Origin of blockade
1670-80; block (v.) + -ade1
Related forms
blockader, noun
counterblockade, noun, verb, counterblockaded, counterblockading.
nonblockaded, adjective
preblockade, noun, verb (used with object), preblockaded, preblockading.
problockade, adjective
unblockaded, adjective
1. See siege. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for blockade
  • In this case the blockade is a so-called momentum barrier between two identical molecules experiencing mutual repulsion.
  • Keeping up a blockade is no justification for violence.
  • The best way to get around your company's web blockade is the run a true proxy server.
  • blockade a country to prevent its marker from being moved for a turn and many others.
  • The third possibility that began to be considered at that first meeting was some sort of blockade.
  • The current government did nothing to solve the blockade.
  • Fourthly because it had the predictable effect of weakening the case for a blockade rather than strengthening it.
  • Eventually they stepped outside the blockade and started to bandy words with the police.
  • But world leaders are taking the possibility of a blockade seriously.
  • Pike went up to the main blockade of students and told them that if they didn't move they'd be shot.
British Dictionary definitions for blockade


(military) the interdiction of a nation's sea lines of communications, esp of an individual port by the use of sea power
something that prevents access or progress
(med) the inhibition of the effect of a hormone or a drug, a transport system, or the action of a nerve by a drug
verb (transitive)
to impose a blockade on
to obstruct the way to
Derived Forms
blockader, noun
Word Origin
C17: from block + -ade, as in ambuscade
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
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Word Origin and History for blockade

mid-17c., from block (v.) + -ade, false French ending (the French word is blocus, 18c. in this sense, which seems to be in part a back-formation from the verb bloquer and in part influenced by Middle Dutch blokhuus "blockhouse").


late 17c., from blockade (n.). Related: Blockaded; blockading.

Online Etymology Dictionary, © 2010 Douglas Harper
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blockade in Medicine

blockade block·ade (blŏ-kād')

  1. Intravenous injection of large amounts of colloidal dyes in which the reaction of the reticuloendothelial cells to other influences is temporarily prevented.

  2. Arrest of nerve impulse transmission at autonomic synaptic junctions, autonomic receptor sites, or myoneural junctions through the action of a drug.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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