Thailand

American  

[tahy-land, -luhnd] / ˈtaɪˌlænd, -lənd /

noun

1. Formerly Siam.  a kingdom in SE Asia: official name of Siam 1939–45 and since 1949. 198,242 sq. mi. (513,445 sq. km). Bangkok.

2. Also called Gulf of Siam.  Gulf of. an arm of the South China Sea, S of Thailand.

---

Thailand British  

/ ˈtaɪˌlænd /

noun

1. Former name (until 1939 and 1945–49): Siam.  a kingdom in SE Asia, on the Andaman Sea and the Gulf of Thailand: united as a kingdom in 1350 and became a major SE Asian power; consists chiefly of a central plain around the Chao Phraya river system, mountains rising over 2400 m (8000 ft) in the northwest, and rainforest the length of the S peninsula. Parts of the SW coast suffered badly in the Indian Ocean tsunami of December 2004. Official language: Thai. Official religion: (Hinayana) Buddhist. Currency: baht. Capital: Bangkok. Pop: 67 448 120 (2013 est). Area: 513 998 sq km (198 455 sq miles)

2. Former name: Gulf of Siam.  an arm of the South China Sea between the Malay Peninsula and Indochina

---

Thailand Cultural  

1. Constitutional monarchy in southern Southeast Asia, bordered by Burma to the west and northwest, Laos to the north and east, Cambodia to the southeast, and the Gulf of Siam (an arm of the Pacific Ocean) and Malaysia to the south. Its capital and largest city is Bangkok.

---

Discover More

Strongly supported the United States during the Vietnam War, Thailand was the site of American air bases until 1976, when relations with the United States deteriorated.

During the early 1990s, its economy became one of the strongest in Asia, but it experienced a sharp downturn in the mid-1990s.

Thailand was formerly called Siam.

Example Sentences

Friday's ceremony was attended by representatives from the neighbouring nations of China, India and Thailand -- as well as 20 other countries, according to parliamentary officials.

From Barron's • Apr. 10, 2026

Singapore joins other countries in South East Asia that have taken steps to save energy, like Thailand, which also asked people to keep air conditioners at 26-27C.

From BBC • Apr. 9, 2026

Earl was deployed in the 1960s to the same base in Thailand where Kultida Punsawad worked as a secretary.

From Los Angeles Times • Apr. 8, 2026

"If ICE was requesting travel documents from Thailand, they went to the wrong country," Nguyen told AFP.

From Barron's • Apr. 7, 2026

He says the safer way to go to Thailand is via Vietnam.

From "First They Killed My Father: A Daughter of Cambodia Remembers" by Loung Ung