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Celcius vs. Celsius — Which is Correct Spelling?

By Tayyaba Rehman — Updated on March 20, 2024
"Celcius" is the incorrect spelling, while "Celsius" is the correct one. Celsius is a scale for measuring temperature.
Celcius vs. Celsius — Which is Correct Spelling?

Which is correct: Celcius or Celsius

How to spell Celsius?


Incorrect Spelling


Correct Spelling

Key Differences

Recall scientist Anders Celsius, and remember there's only one 'i'.
Think "Cels-i-us," where the 'i' comes before 'u'.
Relate "Celsius" to "centigrade," both starting with 'Ce-'.
Visualize the thermometer with "Celsius" written on it.
Memorize: "It's 's' before 'i', not 'c' before 'i'."

How Do You Spell Celsius Correctly?

Incorrect: The scientist recorded the boiling point of the substance at 100 degrees Celcius.
Correct: The scientist recorded the boiling point of the substance at 100 degrees Celsius.
Incorrect: Can you convert 75 degrees Celcius to Fahrenheit?
Correct: Can you convert 75 degrees Celsius to Fahrenheit?
Incorrect: The water freezes at 0 degrees Celcius.
Correct: The water freezes at 0 degrees Celsius.
Incorrect: It's hard to believe that it's only 5 degrees Celcius outside in April.
Correct: It's hard to believe that it's only 5 degrees Celsius outside in April.
Incorrect: The temperature today is 30 degrees Celcius, perfect for the beach.
Correct: The temperature today is 30 degrees Celsius, perfect for the beach.

Celsius Definitions

The degree Celsius is a unit of temperature on the Celsius scale, a temperature scale originally known as the centigrade scale. The degree Celsius (symbol: °C) can refer to a specific temperature on the Celsius scale or a unit to indicate a difference or range between two temperatures.
"Celsius" is a temperature scale where 0° is the freezing point of water.
Water boils at 100° Celsius.
"Celsius" is an alternative to Fahrenheit for measuring temperature.
The weather forecast predicted 25° Celsius for tomorrow.
"Celsius" is used internationally in the metric system.
Many countries use Celsius to report daily temperatures.
"Celsius" is often denoted by the symbol "°C".
The cold drink was at 4° Celsius.
"Celsius" is named after the Swedish astronomer Anders Celsius.
Anders Celsius introduced the Celsius scale in 1742.
Of or relating to a temperature scale that registers the freezing point of water as 0° and the boiling point as 100° under normal atmospheric pressure. See Table at measurement.
Alternative case form of Celsius
The Celsius thermometer or scale, so called from Anders Celsius, a Swedish astronomer, who invented it. It is the same as the centigrade thermometer or scale.
Swedish astronomer who devised the centigrade thermometer (1701-1744)

Celsius Meaning in a Sentence

I learned that the average body temperature is about 37 degrees Celsius.
My science teacher explained that water boils at 100 degrees Celsius under standard atmospheric pressure.
When the weather forecast says it's going to be 25 degrees Celsius, I like to plan a picnic.
It felt odd to have Christmas in Australia with the temperature being 30 degrees Celsius.
The guidebook mentioned that the average temperature in July for that city is 25 degrees Celsius.
During our experiment, we had to heat the solution to 60 degrees Celsius.
It was surprising to find out that the surface temperature of Venus is over 460 degrees Celsius.
To make perfect candy, you need to heat the sugar to exactly 115 degrees Celsius.
In the lab, we were taught to always measure temperature in Celsius for scientific accuracy.
The temperature in Phoenix can reach 40 degrees Celsius during the summer.
According to my weather app, it will cool down to 15 degrees Celsius tonight.
Our teacher showed us how to convert temperatures from Fahrenheit to Celsius.
My favorite season is spring when the temperature is around 20 degrees Celsius.
It's crucial to set the oven correctly; the cake needs to bake at 180 degrees Celsius.
The thermometer outside read -20 degrees Celsius, so we decided to stay in.
The sauna can reach temperatures of up to 90 degrees Celsius, which is very hot.
The Arctic Ocean can have water temperatures just below zero degrees Celsius.
The new species of fish discovered can survive in waters as cold as -2 degrees Celsius.
When camping in the desert, the temperature dropped to 10 degrees Celsius at night.
I was amazed to learn that water under pressure can remain liquid above 100 degrees Celsius.
In science class, we measured the boiling point of various liquids, all in degrees Celsius.
Freezing rain occurs when the air near the ground is below 0 degrees Celsius.

Celsius Idioms & Phrases

Hit the Celsius

To reach a specific temperature.
By noon, the beach had hit the Celsius, reaching a perfect 28 degrees for swimming.

Climb the Celsius

An increase in temperature or intensity.
As the marathon progressed, runners felt the climb in the Celsius, making the race more challenging.

Celsius rising

A situation where the temperature is increasing, indicating warming weather or a heated situation metaphorically.
As the debate got more intense, you could feel the Celsius rising in the room.

Under the Celsius

Experiencing colder than usual temperatures.
With the storm approaching, we're definitely under the Celsius this week.

At a cool Celsius

Being at a comfortably cool temperature, often in a refreshing way.
After the heatwave, the drop to a cool 20 degrees Celsius was welcomed by everyone.

Celsius drop

A sudden decrease in temperature.
The sudden Celsius drop caught us off guard, and we had to find our sweaters.

Celsius swing

A term indicating a wide range of temperature changes within a short period.
The desert experiences a Celsius swing from day to night, unlike anything I've felt before.

Above the Celsius

Warmer than average or expected temperatures.
This summer has been consistently above the Celsius, making air conditioning a necessity.

Dive into the Celsius

To immerse oneself in cold conditions, either literally or figuratively.
Taking a dip in the mountain lake was like diving into the Celsius.

A degree of Celsius

A small, measurable increase in temperature.
Just a degree of Celsius can make a significant difference in comfort level during a heatwave.

Common Curiosities

What is the pronunciation of Celsius?

It is pronounced as /ˈsɛəs/.

What is the verb form of Celsius?

There isn't a verb form for "Celsius."

What is the root word of Celsius?

The term originates from the name "Anders Celsius."

What is the plural form of Celsius?

It remains "Celsius" when referring to multiple measurements.

Why is it called Celsius?

It's named after the Swedish astronomer Anders Celsius who introduced it.

Which conjunction is used with Celsius?

No specific conjunction is uniquely paired with "Celsius." It depends on the context.

Which vowel is used before Celsius?

Generally, 'a' as in "a Celsius scale."

Is Celsius an abstract noun?

No, it's a concrete noun as it refers to a specific scale of measurement.

Is Celsius an adverb?

No, it is not an adverb.

Is Celsius a vowel or consonant?

"Celsius" is a word, not a single letter. So, it consists of both vowels and consonants.

Is the word Celsius imperative?

No, it's not in the imperative form.

What is the singular form of Celsius?

The singular form is "Celsius."

Which preposition is used with Celsius?

Typically "at" as in "at 25 degrees Celsius."

Is Celsius a collective noun?

No, it's not a collective noun.

What is the opposite of Celsius?

There isn't a direct opposite, but another temperature scale is "Fahrenheit."

Is Celsius a negative or positive word?

It is neutral; it's a scientific term.

Is the Celsius term a metaphor?

No, it is a literal term for a temperature scale.

Is the word “Celsius” a Direct object or an Indirect object?

It can be either, depending on the sentence.

What is the stressed syllable in Celsius?

The first syllable, "Cel."

What is another term for Celsius?


Which determiner is used with Celsius?

Determiners like "a," "the," "this," or "that" can be used based on the context.

Is Celsius a noun or adjective?

"Celsius" can function as both a noun and an adjective.

Is the word Celsius a Gerund?

No, it's not a gerund.

How many syllables are in Celsius?

There are three syllables.

How do we divide Celsius into syllables?


Which article is used with Celsius?

Both "a" and "the" can be used, depending on the context.

Is Celsius a countable noun?

No, it's uncountable.

What part of speech is Celsius?

It can be a noun or an adjective.

How is Celsius used in a sentence?

The water boils at 100 degrees Celsius.

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Author Spotlight

Written by
Tayyaba Rehman
Tayyaba Rehman is a distinguished writer, currently serving as a primary contributor to As a researcher in semantics and etymology, Tayyaba's passion for the complexity of languages and their distinctions has found a perfect home on the platform. Tayyaba delves into the intricacies of language, distinguishing between commonly confused words and phrases, thereby providing clarity for readers worldwide.

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