PROSYLOGISM
Pro*sy"lo*gism, n. Etym: [Pref. pro- + syllogism.] (Logic)
Defn: A syllogism preliminary or logically essential to another syllogism; the conclusion of such a syllogism, which becomes a premise of the following syllogism.
PROTACTIC
Pro*tac"tic, a. Etym: [Gr.
Defn: Giving a previous narrative or explanation, as of the plot or personages of a play; introductory. = 32,500 yrs.) Also called brevium, Uranium X2 and UX2.
PROTAGON
Pro"ta*gon, n. Etym: [Proto- + Gr. Protagonist. So called because it
was the first definitely ascertained principle of the brain.]
(Physiol. Chem.)
Defn: A nitrogenous phosphorized principle found in brain tissue. By decomposition it yields neurine, fatty acids, and other bodies.
PROTAGONIST
Pro*tag"o*nist, n. Etym: [Gr.
Defn: One who takes the leading part in a drama; hence, one who takes
lead in some great scene, enterprise, conflict, or the like.
Shakespeare, the protagonist on the great of modern poetry. De
Quincey.
PROTAMIN
Pro"ta*min, n. Etym: [Gr. (Physiol. Chem.)
Defn: An amorphous nitrogenous substance found in the spermatic fluid of salmon. It is soluble in water, which an alkaline reaction, and unites with acids and metallic bases.