abbreviations
"Tr" - a traditional, usually academic definition or symbol
"Ex-" - example

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

q
Abbreviation for a . see Note-values

Q
Abbreviation for a .

QUARTER-NOTE
see Note-values

QUALITATIVE (DIMENSIONS)
See Worlds

QUANTITATIVE (DIMENSIONS)
See Worlds