Longman Dictionary of Contemporary English homepage

radioactive dating

 noun
     
Related topics: Measurement
radioactive dating [uncountable] American English
TM a scientific method of calculating the age of a very old object by measuring the amount of a certain substance in it [= carbon dating British English]
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

Dictionary pictures of the day
Do you know what each of these is called?
What is the word for picture 1? What is the word for picture 2? What is the word for picture 3? What is the word for picture 4?
Click on any of the pictures above to find out what it is called.

Explore our topic dictionary

Browse the dictionary