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See more synonyms for rigidize on Thesaurus.com
verb (used with object), rig·id·ized, rig·id·iz·ing.
  1. to make rigid, as through special processing or the addition of chemicals, plastics, etc.: rigidized aluminum.
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Also especially British, rig·id·ise.

Origin of rigidize

First recorded in 1945–50; rigid + -ize
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018