PRIMITIVE a.
imitive streak. It is not connected with the medullary groove, which appears later and in front of it. -- Primitive plane (Spherical Projection), the plane upon which the projections are made, generally coinciding with some principal circle of the sphere, as the equator or a meridian. -- Primitive rocks (Geol.), prim…
PRINTING n.
ing. See under Block. -- Printing frame (Photog.), a shallow box, usually having a glass front, in which prints are made by exposure to light. -- Printing house, a printing office. -- Printing ink, ink used in printing books, newspapers, etc. It is composed of lampblack or ivory black mingled with linseed or nut oil…
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…