Incorrect spelling, explanation: mynute is a mistake, because the word minute comes from Latin and should be spelled with i, not y. The mistake may be caused by pronunciation, which might not be clear for everyone, however, the correct form is minute.

Correct spelling, explanation: the word comes from Latin minuta, so minute is the correct spelling. Mynute is incorrect, and probably this mistake is caused by pronunciation, which may be misleading for non-natives. Sound /ɪ/ is something on the border of i and y, but the word is not spelled with y. Because of the origins, the word is spelled minute.

Definition of minute:
noun, one-sixtieth of an hour; not specified short moment
It’s one minute to the New Year!
Please sit down and wait. It will take a minute.

Incorrect spelling

Incorrect spelling

Incorrect spelling

Incorrect spelling