Proto+and+Prox+Prop-Period+3


 * Roots - Proto, Prox, Prop**


 * Proto - First**

Prototype First or preliminary model of something from which other forms are developed or copied.

Protocol The established code of procedure or behavior in any group, organization, or situation.

Protoplasm The colorless material compromising the living part of a cell, including the cytoplasm, nucleus, and other organelles.


 * Prox, Prop - Near**

Proximity Nearness in space, time, or relationship.

Propitious Giving or indicating a good chance of success.

Propitiate To win or regain favor of a god, spirit, or person by doing something that pleases them.