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Definition of: temperature
(tem′pər·ə·chər, -prə-) noun
1. Condition as regards heat or cold.
2. The degree of heat in a body or substance, as measured on the graduated scale of a thermometer. See table below.
3. Sensible heat of the human body; also, excess of this above the normal.
4. Obs. Constitution; temperament; mixture; temperateness; temperance. [<L temperatura due measure <temperatus. See TEMPERATE.]
To convert from Fahrenheit to Celsius (Centigrade): Subtract 32 from the Fahrenheit reading, multiply by 5, and divide the product by 9. Example: 65o F. -32 = 33; 33 × 5 = 165; 165 ÷ 9 = 18.3° C. To convert from Celsius to Fahrenheit: Multiply the Celsius reading by 9, divide the product by 5, add 32. Example: 30o C. × 9 = 270; 270 ÷ 5 = 54; 54 + 32 = 86° F.
CONVERSION TABLE
| Fahrenheit | Celsius | Fahrenheit | Celsius |
| 500 | 260.0 | -10 | -23.3 |
| 400 | 204.4 | -20 | -28.9 |
| 300 | 149.0 | -30 | -34.4 |
| 212 | 100.0 | -40 | -40.0 |
| 200 | 93.3 | -50 | -45.6 |
| 100 | 37.8 | -60 | -51.1 |
| 90 | 32.2 | -70 | -56.7 |
| 80 | 26.7 | -80 | -62.2 |
| 70 | 21.1 | -90 | -67.8 |
| 60 | 15.6 | -100 | -73.3 |
| 50 | 10.0 | -200 | -129.0 |
| 40 | 4.4 | -300 | -184.0 |
| 32 | 0.0 | -400 | -240.0 |
| 30 | -1.1 | *-459.4 | -273.0 |
| 20 | -6.6 | ||
| 10 | -12.2 | ||
| 0 | -17.8 | *Absolute zero |
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