This document provides abbreviations for oils used in Catholic rituals: OC represents the Oil of Catechumens, OS represents Holy Oil, OI represents Oil of the Sick, and SC represents Holy Chrism.

2. Amice
Symbol of
the helmet
of salvation

18. OC= OLEUM CATECHUMENORUM
OS=OLEUM SANCTUM
OI=OLEUM INFIRMMORUM
SC=SANCTUM CHRISMA