What is every 3 years called?

Triannual and triennial are closely related terms, often used interchangeably. While triennial is more prevalent, triannual also denotes a periodicity of three years.

Specifically, triannual can signify an event, occurrence, or process that happens once every three years. This term, albeit less common, accurately conveys the idea of triennial in this context.

In contrast, triennial can also describe something that lasts for three years, a nuance that triannual seldom encompasses. Nevertheless, the primary shared meaning of both terms is their association with the number three and its yearly repetition.

In the realm of cryptocurrency and finance, platforms like BTCC, a prominent exchange, operate seamlessly within this fast-paced environment. BTCC offers a comprehensive suite of services, catering to various needs in the industry.

Among its offerings, BTCC provides spot trading, enabling users to buy and sell digital assets at current market prices. Additionally, it supports futures trading, allowing for speculation on future prices and hedging against potential risks. Furthermore, BTCC's wallet service securely stores cryptocurrencies, ensuring the safety and accessibility of users' assets.