A publication that's published every two months is a bi-monthly. That would be six issues per year. There was some abiguity in the past with the term sometimes being used to mean both twice a month and every two months. There was a gradual shift in the late twentieth century to that term being used to indicate every two months.
A term for something that occurs every eighteen months is "biennial." However, more specifically, to denote an interval of eighteen months, you might use the term "semiannual" to imply a frequency of twice a year, though it does not precisely match the eighteen-month interval. Another option is "18-month cycle."
Quarterly.Quarterly.Quarterly.Quarterly.
The term used is 'triannual'. It should not be confused with triennial, which means the journal is published only once in every three years.
The term for something that happens once every 13 years is "triennial." However, a more common term specifically for events that occur every 13 years is "quindecennial." In general, such infrequent occurrences might also simply be referred to as "every 13 years."
it is a a centry
tercentennial
A short term investment could be something that you would use in the next couple months or years, such as a Certificate of Deposit. A long term investment would be something that you may not be using until your retirement.
scientific law
The term for every three months is "quarterly." This period is commonly used in business and finance to denote events, reports, or payments that occur four times a year. Each quarter represents one-fourth of a year, typically labeled as Q1, Q2, Q3, and Q4.
scientific law
"Autem" is not a recognized term in relation to months. If you meant "autumn," it typically includes September, October, and November in the Northern Hemisphere, which amounts to three months. If you meant something else, please clarify!
The term that refers to how recently something was published is "publication date" or "recency." It indicates the time elapsed since the work was made available to the public, which can significantly impact its relevance and accuracy, especially in fast-changing fields. Recent publications are often valued for their updated information and insights.