A more thorough explanation:

Definition: Dominical (də-min-ə-kəl) is an adjective that describes something related to Sunday or the Lord's day.

1. The dominical feast is celebrated every Sunday in the church.

2. The dominical letter for this year is "G".

3. The dominical day of the week is always Sunday.

These examples illustrate how the word "dominical" is used to describe things that are related to Sunday or the Lord's day. In the first example, the dominical feast is a religious celebration that takes place every Sunday. In the second example, the dominical letter is a letter used in the calculation of the date of Easter, which is always celebrated on a Sunday. In the third example, the dominical day of the week is always Sunday, which is considered the Lord's day in many religions.