Ounce (oz)
Definition: Ounce (symbol: oz) na mass unit wey equal 1/16 of one pound, or about 28.3495 grams. International avoirdupois ounce don be standard since 1959.
History/origin: Ounce get Roman roots. Roman uncia na 1/12 of Roman pound. With time, the number of ounces per pound settle at 16 for the avoirdupois system wey dem dey use for most everyday goods.
Current use: Ounces dey commonly used for United States for food portions, postal weights, and product packaging. Troy ounce na different unit wey dem dey use only for precious metals like gold and silver.