The Collaborative International Dictionary
Participialize
Participialize \Par`ti*cip"i*al*ize\, v. t. [imp. & p. p. Participialized; p. pr. & vb. n. Participializing.] To form into, or put in the form of, a participle. [R.]
Wiktionary
participialize
vb. (context grammar transitive English) To form into, or put in the form of, a participle.