the relative extent of something; a thing's overall dimensions or magnitude; how big something is

the schools varied in size

a forest the size of Wales

firms of all sizes

each of the classes, typically numbered, into which garments or other articles are divided according to how large they are

I can never find anything in my size

alter or sort in terms of size or according to size

twist drills are sized in millimetres

estimate or measure something's dimensions

she was trying to size up a room with a tape measure

a gelatinous solution used in glazing paper, stiffening textiles, and preparing plastered walls for decoration

treat with size to glaze or stiffen

paper will adhere to sized walls better