How important do you think punctuation marks are in writing? Have you tried reading a passage without any punctuation? It would not make sense, right? Punctuation lets the readers know where there should be a pause and where an idea/sentence ends.
Once you have learnt about the use of a full stop, a comma, a semicolon and a question mark, you can go on to learn what a colon is and how it is used. In this article, you will be introduced to the definition of a colon, its significance and how it can be used in sentences along with examples.
Table of Contents
- What Is a Colon? – Meaning and Definition
- How and When to Use a Colon? – Points to Remember
- Examples of the Use of Colon in Sentences
- Frequently Asked Questions on Colon in English Grammar
What Is a Colon? – Meaning and Definition
A colon is a punctuation mark that has two dots of equal size placed vertically. It is used in a sentence to introduce an example, a list, a quotation, etc. The Oxford Learner’s Dictionary defines a colon as “the mark ( : ) used to introduce a list, a summary, an explanation, etc. or before reporting what somebody has said”, and according to the Cambridge Dictionary, a colon is defined as “the symbol : used in writing, especially to introduce a list of things or a sentence or phrase taken from somewhere else”.
The Merriam-Webster Dictionary provides two different definitions of a colon based on its usage. According to them, a colon is “a punctuation mark : used chiefly to direct attention to matter (such as a list, explanation, quotation, or amplification) that follows” and “the sign : used between the parts of a numerical expression of time in hours and minutes (as in 1:15) or in hours, minutes, and seconds (as in 8:25:30), in a bibliographical reference (as in Nation 130:20), in a ratio where it is usually read as “to” (as in 4:1 read “four to one”), or in a proportion where it is usually read as “is to” or when doubled as “as” (as in 2:1::8:4 read “two is to one as eight is to four”).”
How and When to Use a Colon? – Points to Remember
A colon is used in a sentence for the following reasons:
- To introduce or state a point,
- To present a list of items, a tabular column and text,
- In citations and biblical references,
- In dialogue writing, to quote the speaker’s words,
- To draw attention to nouns/noun phrases, examples and quotations, and
- To mention the time of the day and ratios.
Knowing when to use a colon is important but what is equally important is to know how to use it. So, let us now look at how sentences have to be punctuated when using a colon.
Dos and Don’ts in the Usage of Colon in Sentences
- When using a colon to list items, make sure to use a capital letter after the colon if the word that follows the colon is a proper noun.
- When used in sentences, see to it that you use a space after the colon.
- When used between numbers in time and listing of biblical references, you need not use a space before or after the colon.
- When used in dialogue writing, use the colon immediately after the name of the speaker, and after the space, always use a capital letter to start the dialogue.
- Do not use a colon in between a verb and its object or complement.
- In a similar manner, a colon should not be used in between a preposition and the object of a preposition.
- Never use a colon after ‘like’, ‘includes’, ‘such as’, ‘especially’, ‘namely’, etc.
Examples of the Use of Colon in Sentences
To help you understand a little more clearly, here are a few examples. Check them out and try to analyse how it is being used.
Example 1: Lists/Series
- A sentence has two parts and they are:
- Subject
- Predicate
- The students who have enrolled for the competition are:
- Anurag
- Ashish
- Binsha
- Devi
- Harish
- Irene
- Preethi
- The ingredients for the dish are: potatoes, onions, mushrooms, pepper powder, turmeric powder and salt.
Example 2: Dialogue Writing
Teacher: Good morning, children.
Students: Good morning, Ma’am.
Teacher: Have you all completed the work I had given you yesterday?
Students: Yes Ma’am.
Example 3: Time
- The meeting will start at 11:30 a.m. sharp.
- The train is at 6:45 p.m.
- The time now is 15:15 p.m.
Example 4: Biblical References, Titles and Citations
- Matthew 20:28 says, “For the Son of Man came not to be served but to serve…”
- ‘The Tipping Point: How Little Things Can Make a Big Difference’ by Malcolm Gladwell is a best-seller.
- Ashbourn, J. (2014) Biometrics in the new world: the cloud, mobile technology and pervasive identity. 2nd edn. London: Springer
Example 5: Mathematical Expressions
- The ratio of milk to water is 1:3.
- The ratio of girls to boys this year is 4:6.
Example 6: Before Nouns/Noun Phrases, Examples, Quotations
- I have what every human being needs: caring friends and a loving family.
- For example: Paris, Berlin, Tokyo, Portugal
- This is just like what Shakespeare once said: “There is nothing either good or bad, but thinking makes it so”.
Frequently Asked Questions on Colon in English Grammar
What is a colon (:)?
A colon is a punctuation mark that has two dots of equal size placed vertically. It is used in a sentence to introduce an example, a list, a quotation, etc.
What is the definition of a colon?
The Oxford Learner’s Dictionary defines a colon as “the mark ( : ) used to introduce a list, a summary, an explanation, etc. or before reporting what somebody has said”, and according to the Cambridge Dictionary, a colon is defined as “the symbol : used in writing, especially to introduce a list of things or a sentence or phrase taken from somewhere else”.
When to use a colon?
A colon can be used:
- To introduce or state a point,
- To present a list of items, a tabular column and text,
- In citations and biblical references,
- In dialogue writing, to quote the speaker’s words,
- To draw attention to nouns/noun phrases, examples and quotations, and
- To mention the time of the day and ratios.
Give a few examples of the use of colon in sentences.
Here are a few examples of sentences using colon.
- The ingredients for the dish are: potatoes, onions, mushrooms, pepper powder, turmeric powder and salt.
- For example: Paris, Berlin, Tokyo, Portugal
- Teacher: Good morning, children.