noun a publication which appears regularly once a month.
2. monthly ·adv once a month; in every month; as, the moon changes monthly.
3. monthly ·adv as if under the influence of the moon; in the manner of a lunatic.
4. monthly ·adj continued a month, or a performed in a month; as, the monthly revolution of the moon.
5. monthly ·adj done, happening, payable, published, ·etc., once a month, or every month; as, a monthly visit; monthly charges; a monthly installment; a monthly magazine.