[ uhn-sod-er ]
/ ʌnˈsɒd ər /
verb (used with object)
to separate (something soldered).
to disunite; sunder: to unsolder ties of friendship.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for unsolder
If strained when very hot it is apt to unsolder the strainer.
In soldering the bottom, care must be taken not to unsolder the corner.Copper Work|Augustus F. Rose