(n) secondary education
(n) secondary teachers
(n) coordinate structure
(n) (comp) equivalence operation
IF-AND-ONLY-IF operation
IFF
(n) fair exchange
(n) (comp) IF-AND-ONLY-IF gate
IF-AND-ONLY-IF element
(n) (comp) Constant Angular Velocity
(n) (comp) contour map
(n) arithmetic series
(n) arithmetic progression
(n) geometric series
(n) geometric progression
(n) (comp) isotropic mapping
(n) staff sergeant
(n) bisector
(n,adj-no) principle of equality
(n) grand-prize diploma
(n) inferiority complex
(n) first mate
first officer
(n) High Court
(n) high commissioner
(exp) to grade
to classify
(n) (ling) coordinating conjunction
(n) (comp) equivalent reference string
(n) topographic map
(n) (comp) isochronous communication
(n) (comp) isochronous transmission
(n) isosceles triangle
(n) isosceles triangle
(n) (comp) non-equivalence operation
EXCLUSIVE-OR operation