Definition of Celsius in English:


(also C)


  • [postpositive when used with a numeral] Of or denoting a scale of temperature on which water freezes at 0° and boils at 100° under standard conditions.

    ‘a temperature of less than 25° Celsius’
    • ‘Biological records show that insect species are appearing six days earlier on average for each degree Celsius rise in temperature.’
    • ‘Water exposed to atmospheric pressure boils at approximately 100 degrees Celsius.’
    • ‘Instead of a global temperature rise of 2.1 degrees Celsius occurring by 2094, it will be postponed to 2100.’
    • ‘Temperatures throughout the region hovered around the minus five degrees Celsius range for most of the two week storm.’
    • ‘So far, studies show that platform level air temperatures will very rarely be above 20 degrees Celsius or lower than freezing.’
    • ‘I have personally been to both in the midst of winter and enjoyed temperatures around the 20 degrees Celsius mark.’
    • ‘For an hour and a half in the oppressive, dry 35 Celsius degree heat of the day we traveled across the valley and hiked up to the top of Graveyard pass.’
    • ‘They even use Celsius temperatures, which nobody understands.’
    • ‘The debut of summer saw temperatures entering the 30 degrees Celsius range.’
    • ‘Without greenhouse gases the earth's average surface temperature would be about 35° Celsius cooler.’
    • ‘They are most comfortable in water about 25 degrees Celsius, or slightly higher for breeding.’
    • ‘It was two o'clock in the afternoon and thirty-two degrees Celsius outside with the humidity at 88%.’
    • ‘Citizens experienced the heat of summer as the temperature rocketed to 34 Celsius degrees last Sunday.’
    • ‘Swindon Council's highways department was on red alert as temperatures plunged to 5 degrees Celsius overnight.’
    • ‘The ship's diving team took the opportunity to progress continuation training in the pristine 31 degrees Celsius waters around the port.’
    • ‘The Kelvin scale uses Celsius units, the main difference being that zero on the Kelvin scale is absolute.’
    • ‘It is better to pre-treat and pre-soak heavily soiled clothing and use a warm wash, of around 50 Celsius degrees, to conserve energy.’
    • ‘Transfer the meat to a 200 degree Celsius oven for 10 minutes and stand for a further 5 minutes before serving.’
    • ‘Without these greenhouse gases the earth's average surface temperature would be about 33 degrees Celsius cooler.’
    • ‘The dampness and high temperature of about 25 degrees Celsius provides the best conditions for mould to grow and reproduce.’


  • The Celsius scale of temperature.

    • ‘The Fahrenheit and Celsius scales are based on two fixed points, the Kelvin and Rankine scales are based on one.’
    • ‘The confusion arises due to the other common temperatures scale, the Celsius scale (based on the old Centigrade scale).’
    • ‘I have similar problems with temperature - cold temperatures work best in Celsius, hot in Fahrenheit.’
    • ‘The other features on the front are three buttons for setting the temperature and fan speed alarms, changing from Celsius to Fahrenheit and resetting the alarms.’
    • ‘Most of our temperatures will be presented in Celsius, but you can grab a Celsius to Fahrenheit converter here.’
    • ‘If you did the bloody thing your IQ and the temperature right now in Celsius are about one and the same.’
    • ‘The Celsius temperature scale (°C) was developed by Anders Celsius in 1742.’
    • ‘But whether you calculate in Fahrenheit or Celsius, the overall winner is usually selected by a matter of shades and degrees.’
    • ‘But I've never, ever learned to intuit Celsius as a way to express temperature.’
    • ‘Likewise, we can measure temperatures on the Celsius or Fahrenheit scales.’
    • ‘The kelvin (K) temperature scale is an extension of the degree Celsius scale down to absolute zero, a hypothetical temperature characterized by a complete absence of heat energy.’
    • ‘My cheat for C to F is to take the temperature in Celsius, double it and add it to 30.’


Celsius rather than centigrade is the standard accepted term when giving temperatures: use 25° Celsius rather than 25° centigrade