Pronunciation: [tˈe͡ɪɡəs] (IPA) 
The spelling of the word "Tagus" is quite straightforward. It is pronounced as /ˈteɪɡəs/ with a stressed "ay" sound followed by the "g" sound which is followed by a short "uh" sound and concluded with an "s" sound. This word represents the longest river on the Iberian Peninsula and serves as an important water source in Spain and Portugal. The name "Tagus" comes from the Latin word "Tagus" which means "to touch" or "to stroke".
Tagus is the Latinized form of the Greek name "Tághos" and is mainly used to denote the Tagus River, which is one of the major rivers on the Iberian Peninsula. The Tagus River, spelled "Tajo" in Spanish and "Tejo" in Portuguese, is located in the southwestern part of the Iberian Peninsula and is the longest river in the region, running approximately 1,008 kilometers (626 miles).
The Tagus River holds great historical and cultural significance, particularly in regards to the formation and development of various Iberian civilizations. It has been a crucial trade route and served as a natural barrier between different territories throughout history.
Additionally, "Tagus" may also refer to other geographical features associated with the river, such as the Tagus Estuary, which is an area where the river meets the Atlantic Ocean. This estuary is a vital ecosystem, serving as a habitat for numerous species of flora and fauna.
Moreover, the term "Tagus" can occasionally be found in the names of various settlements or provinces along the river's course, highlighting its influence on regional toponymy.
Overall, Tagus pertains to the Tagus River and its associated geography, encompassing the river itself, its estuary, and the areas influenced by its presence.
The word "Tagus" has its origins in ancient Greek, specifically from the word "Tágos" (Τάγος). In Greek mythology, Tagus was the name of a river god, often associated with the river that flowed through the Iberian Peninsula (modern-day Spain and Portugal). The ancient Romans later adopted this name as "Tagus" for the same river. Over time, the name expanded to refer to the entire region and the people inhabiting it. Consequently, the term "Tagus" became associated with the Iberian Peninsula as a whole. Today, the word "Tagus" is no longer used primarily in its original context, but its association with the Iberian Peninsula remains.
