PIONEERED
Verb
pioneered
simple past tense and past participle of pioneer
Source: Wiktionary
PIONEER
Pi`o*neer", n. Etym: [F. pionier, orig., a foot soldier, OF. peonier,
fr. OF. peon a foot soldier, F. pion. See Pawn in chess.]
1. (Mil.)
Definition: A soldier detailed or employed to form roads, dig trenches, and
make bridges, as an army advances.
2. One who goes before, as into the wilderness, preparing the way for
others to follow; as, pioneers of civilization; pioneers of reform.
Pi`o*neer", v. t. & i. [imp. & p. p. Pioneered; p. pr. & vb. n.
Pioneering.]
Definition: To go before, and prepare or open a way for; to act as pioneer.
Source: Webster’s Unabridged Dictionary 1913 Edition