gr is the abbreviation for the apothecary measurement grain VIISS is 7 1/2 (the Roman Numeral for 7 is VII and Roman Numeral for 1/2 is SS) There are 60mg (milligrams) is one grain, therefore.....gr VIISS = 450mg
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7.5 =1 gr (grVIIss= gr=grain, VII=7(roman numerals) ss=1/2 or .5
1gr =60mg
7.5gr x 60mg = 450mg
vii = 7 and ss=1/2 so 7.5 grams
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GR - lobbyism
Gr. is usually short for grade. Ex. I am in gr. eleven...
Gr Mean Good Race Nr Mean Nice Race