POLYMERIZED
Verb
polymerized
simple past tense and past participle of polymerize
Source: Wiktionary
POLYMERIZE
Pol"y*mer*ize, v. t. (Chem.)
Definition: To cause polymerization of; to produce polymers from; to
increase the molecular weight of, without changing the atomic
proportions; thus, certain acids polymerize aldehyde.
Pol"y*mer*ize, v. i. (Chem.)
Definition: To change into another substance having the same atomic
proportions, but a higher molecular weight; to undergo
polymerization; thus, aldehyde polymerizes in forming paraldehyde.
Source: Webster’s Unabridged Dictionary 1913 Edition