National Institute | of

OF
abbr. chem. scient.	Oxygen Free
abbr. el. scient.	Optical Fiber
abbr. IT	Output File; Overflow Flag
abbr. mil.	Objective Force; Opposing Force; Optional Form
abbr. progr. IT	Open File
abbr. sport.	Outfield; Outfielder

| Radiological

radiological
mil. abbr.	radl

| Science

science
ed.	science class