preswelled

Verb

preswell (third-person singular simple present preswells, present participle preswelling, simple past and past participle preswelled)

1. To cause to become engorged with fluid prior to some other operation.
   • In order to secure uniform depth development it is often necessary to preswell the gelatin to facilitate access of the developer to the deepest grains.1949, Herman Joseph Yagoda, Radioactive measurements with nuclear emulsions, page 60