A prefix signifying before, in front, forth, for, in behalf of,
   in place of, according to; as, propose, to place before; proceed, to go
   before or forward; project, to throw forward; prologue, part spoken
   before (the main piece); propel, prognathous; provide, to look out for;
   pronoun, a word instead of a noun; proconsul, a person acting in place
   of a consul; proportion, arrangement according to parts.