TO BE CONT. 
Credit: GAMES Magazine - Nov. 1982
Emil Regelman  (#1-5)

What happens to the letters left out of commonly abbreviated words? They must have feelings too. The letters ERAE, for example, are the letters (in order) left out of AVERAGE when it is abbreviated AVG.

Can you give some long-overdue recognition to the left out letters below and determine the complete words that leave them out when abbreviated? The words in sets # 3-6 are related.

1)  UME
2)  EAOON

3)
IN
UAR

4)
CH
OO or EE
AR

5)
UNIO
ENIO

6)
CH
IL
UST

Answers:

1. VOLUME - VOL.
2) TEASPOON - TSP.

3)
PINT - PT.
QUART - QT.

4)
INCH - IN.
FOOT or FEET - FT.
YARD - YD.

5)
JUNIOR - JR.
SENIOR - SR.

6)
MARCH - MAR.
APRIL - APR.
AUGUST - AUG.