# Definition of Ounce

An ounce is an Imperial unit of mass.

We use oz. as an abbreviation for ounces. The stick of butter in the picture weighs 4 ounces.

One ounce is equal to 28.349523125 grams. However, if you need to do conversions, it's easier to use the approximate value of 30 g for one ounce.

There's also an Imperial unit of volume called a fluid ounce, which is different from an ounce.

### Description

The aim of this dictionary is to provide definitions to common mathematical terms. Students learn a new math skill every week at school, sometimes just before they start a new skill, if they want to look at what a specific term means, this is where this dictionary will become handy and a go-to guide for a student.

### Audience

Year 1 to Year 12 students

### Learning Objectives

Learn common math terms starting with letter O

Author: Subject Coach
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