BTU = British Thermo Unit
Cm = Curium
Cm of Hg = Curium of Mercury
Deg C = degree Celsius
F = Fahrenheit
H2o = water
Hex = Hexadecimal
Hg = Mercury 
UK = United Kingdom
apoth = Apothecaries
avdp = Avoirdupois
cal = calorie
cir = circular
cm = centimeter
cm = centimeter
cu = cubic 
deg = degree
deg F = degree Fahrenheit
ft= feet
gal = gallon
hp = horsepower
hr = hour
hrs = hours
in = inch
int = international
kg = kilogram
km = kilometer
kw = kilowatt  
lbs = pounds
liq = liquid
m = meter
min = minute
mm = millimeter
mph = miles per hour
oz = ounce 
rev = revolution
rt = right
sec = second
sec = second
sq = square
yd = yard
yds = yards
yr = year