WordReference Random House Unabridged Dictionary of American English © 2020
spot-weld  (spotweld′),USA pronunciation v.t. 
  1. Building, Metallurgyto weld (two pieces of metal) together in a small area or spot by the application of heat and pressure.

n. 
  1. Building, Metallurgya welded joint made by this process.

Collins Concise English Dictionary © HarperCollins Publishers::
spot-weld vb
  1. (transitive) to join (two pieces of metal, esp in the form of wire or sheet) by one or more small circular welds by means of heat, usually electrically generated, and pressure
n
  1. a weld so formed

ˈspot-ˌwelder n
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