Definition
Ounce
An ounce is a customary unit used to measure a small mass.
Continue from this idea into connected AXIO math.
What it means
Ounces are used for comparatively small masses in the customary system. Sixteen equal ounces combine to make one pound, so ounces can be added and regrouped in sets of 16.
Remember it
Sixteen avoirdupois ounces make one pound.
Example
One parcel has a mass of 6 oz and another has a mass of 10 oz. Together they are 6 + 10 = 16 oz, which is 1 lb.
Watch for
A fluid ounce measures volume, not mass. Troy and apothecaries ounces are also different senses; this card owns the avoirdupois mass unit.
Common mix-up
oz means an ounce of mass in suitable context; fl oz means fluid ounce and measures volume.
Exact meaning
In this card, an ounce means the avoirdupois ounce, symbol oz: exactly one-sixteenth of an avoirdupois pound, equal to 28.349523125 grams.