Incorrect spelling, explanation: in British English the correct spelling of the word is cancellation. A common mistake, however, is to spell it as cancelation. It is the result of the fact that the root of the word is the verb to cancel, which features a single -l letter while cancellation has it doubled. Therefore, the cancelation form is considered to be wrong, but it is acceptable in American English.

Correct spelling, explanation: the root of the word cancellation is an English verb to cancel. Its origin can be found in the Latin word cancelli, but it entered Middle English directly from an Old French word canceller. The Middle English meaning of the word was to delete some writing by drawing lines across it. Today, cancellation is a noun.

Definition of cancellation:
1. noun – a decision that something which was arranged will not happen;
The cancellation of the concert was a huge disappointment to all the fans.
2. noun – in commerce, when an order for goods or services is stopped;
The cancellation of flour orders from Ukraine made the prices go up in the whole of Europe.

Collocations with cancellation:
Some common collocations include last-minute cancellation, sudden cancellation, and make a cancellation;
The last-minute cancellation of our flight ruined our holiday plans.
The sudden cancellation of his performance surprised everyone.
If you want to make a cancellation of your order, do it in writing, please.