Defn: An old theory of the preëxistence of germs. Cf. Emboîtement.

PREFORMATIVE
Pre*form"a*tive, n.

Defn: A formative letter at the beginning of a word. M. Stuart.

PREFRONTAL
Pre*fron"tal, a. (Anat. & Zoöl.)

Defn: Situated in front of the frontal bone, or the frontal region of the skull; ectethmoid, as a certain bone in the nasal capsule of many animals, and certain scales of reptiles and fishes. — n.

Defn: A prefrontal bone or scale.

PREFULGENCY Pre*ful"gen*cy, n. Etym: [L. praefulgens, p. pr. of praefulgere to shine forth. See Pre-, and Fulgent.]

Defn: Superior brightness or effulgency. [R.] Barrow.

PREGAGE
Pre*gage" (, v. t.

Defn: To preëngage. [Obs.] Fuller.