essentialprocedure

noun
UK /ɪˈsɛnʃəl prəˈsiːdʒə/
US /ɪˈsɛnʃəl prəˈsiːdʒər/

A very important step you must do to finish a job.

Washing your hands is an essential procedure before you cook food.


OTHER MEANINGS

2. A basic rule that must be followed in a formal setting.

Checking your ticket is an essential procedure at the airport.

3. A medical action that is needed to keep someone healthy.

The doctor explained that the essential procedure would take only ten minutes.

4. A standard way of doing something that cannot be skipped.

Saving your work often is an essential procedure when using a computer.