PRO- n.
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…
PROTO- n.
A combining form prefix signifying first, primary, primordial; as, protomartyr, the first martyr; protomorphic, primitive in form; protoplast, a primordial organism; prototype, protozoan.
PSEUDO- n.
A combining form or prefix signifying false, counterfeit, pretended, spurious; as, pseudo-apostle, a false apostle; pseudo- clergy, false or spurious clergy; pseudo-episcopacy, pseudo-form, pseudo-martyr, pseudo-philosopher. Also used adjectively.
RE- n.
A prefix signifying back, against, again, anew; as, recline, to lean back; recall, to call back; recede; remove; reclaim, to call out against; repugn, to fight against; recognition, a knowing again; rejoin, to join again; reiterate, reassure. Combinations containing the prefix re- are readily formed, and are for the mo…