The plural of a letter A would be "As" (where this was not likely to be read as 'as'), or A's (a rare proper case of using apostrophes to form plurals).
In algebra, double the value of the variable "a" is 2a.
You get 24 if you double 12.
B sharp, C double-sharp, D double-sharp, E sharp, F double-sharp, G double-sharp, A double-sharp, B sharp.
thd double of three is six.
146
Multiply x2, then do it again.
Double Trouble, Double Jeopardy, Double Dutch, Double Dare
Word that has double c double s and double l: successfully.
Successfully contains double L double C and double S. Unsuccessfully also contains double L double C and double S.
An In-N-Out Double Double has 670 calories.
double helix
A double double is a term commonly used in Canada when buying coffee a Tim Hortons. A double double is two teaspoons of sugar and two cream.
Double reed.
kelvin double
double u double u double u
double
Double the amounts in the recipe. Make a double batch.
Double of 58 is 116.