caramelization

• caramelisation

From caramel + -ization.

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caramelization (countable and uncountable, plural caramelizations)

1. (cooking) The process that converts sugars into caramel; the process of caramelizing.
2. (cooking) The browning of sugars by heat.

   Slowly cooking the onions will cause caramelization which will bring out the sweetness and give them a brown color.