Math Definitions - Letter O


Definition of Ounce

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.


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.


Year 1 to Year 12 students

Learning Objectives

Learn common math terms starting with letter O

Author: Subject Coach
Added on: 6th Feb 2018

You must be logged in as Student to ask a Question.

None just yet!