All articles starting with S

Sialon

Sialon is a ceramic alloy of silicon nitride in which silicon is replaced by aluminum and nitrogen by oxygen, developed in the 1970s for easier fabrication.

Sialophagia

Sialophagia (ICD-11 DA04.7), excessive swallowing of saliva, a salivary gland disorder distinct from hypersalivation and drooling, often accompanied by aerophagia.

Oct 20, 2026

Sialoschesis

Sialoschesis, ICD-11 DA04.8, is the suppression of saliva secretion (SNOMED CT 707985000); distinct from xerostomia and hyposalivation, with causes, thresholds, and management.

Sialuria (French type, OMIM 269921) is a rare dominant inborn error of sialic acid metabolism caused by GNE mutations (codons 263/266) that abolish CMP-Neu5Ac feedback inhibition, causing 100–1000x urinary free sialic acid, hepatomegaly, coarse facies, and mild developmental delay in about 11 known cases.

Sialyltransferase

Sialyltransferase (ST, sialyltransferases): Golgi GT-29 enzymes transferring sialic acid from CMP-Neu5Ac to glycoprotein and glycolipid glycans; 20 human genes in ST3Gal, ST6Gal, ST6GalNAc, ST8Sia families; upregulated in cancer hypersialylation.

Siam Amazing Park

Siam Amazing Park, also known as Siam Park City or Suan Siam, is an amusement and water park in Bangkok, Thailand, opened in 1980 and home to the world's largest artificial sea.

Oct 10, 2026

Siam Cement

Siam Cement, today branded SCG, is a Thai investment holding company founded by royal decree in 1913 to make cement domestically, now with over 400 subsidiaries.

Oct 15, 2026

Siam Cement Group

Siam Cement Group (SCG) is a Thai industrial conglomerate headquartered in Bangkok, operating in cement and building materials, chemicals, and packaging. Its parent company was founded in 1913 under King Rama VI.

Siam Confederation (Xiān)

Siam Confederation (Xiān, 暹; Thai Sayam, สยาม) was a federation of Gulf-of-Thailand port polities known from Chinese dynastic records, which joined Lavo in 1351 to form the Ayutthaya kingdom, renamed Xianluo (暹羅) by the Ming court in 1377.

Siam Insect Zoo

Siam Insect Zoo (สวนสัตว์แมลงสยาม) is a live-insect breeding farm, research center, and insect museum in Mae Rim, Chiang Mai, Thailand, founded in 2006 by entomologist Pisuth Ek-Amnuay, with pinned-specimen museum rooms, a butterfly garden, reptiles, and hands-on insect encounters.

Siamang

The siamang, or siamang gibbon, is the largest gibbon, a black arboreal ape native to Sumatra and the Malay Peninsula, known for its inflatable throat sac and webbed toes.

Siamese administrative division of Cambodia (1811–1848)

The Siamese administrative division of Cambodia (การแบ่งเขตปกครองกัมพูชา) was Siam's separation of Cambodia's northwestern provinces, principally Battambang and Siemreap, from the Cambodian monarchy between 1811 and 1848.

Siamese administrative edicts after the fall of Vientiane (1828)

The Siamese administrative edicts after the fall of Vientiane (พระราชกำหนดหัวเมืองลาว) dissolved the Vientiane kingdom in 1828 and placed the middle Mekong under direct Siamese rule.

Siamese annexation of Battambang and Siem Reap

The Siamese annexation of Battambang and Siem Reap was the incorporation of northwestern Cambodia into Siam beginning in 1794, ending with the Franco-Siamese Treaty of 1907.

Siamese annexation of Lan Na

The Siamese annexation of Lan Na (ล้านนา) was Siam's incorporation of the five northern Tai principalities, ending their tributary status and culminating in the creation of Monthon Phayap in 1899.

Siamese capture of Chiang Saen (1804)

The Siamese capture of Chiang Saen (เมืองเชียงแสน) in 1804 was the conquest of the last Burmese stronghold in Lan Na by allied armies of Siam, Chiang Mai, and Vientiane, ending two centuries of Burmese dominance.

Siamese capture of Lovek

The Siamese capture of Lovek was the 1594 seizure of Lovek, Cambodia's capital, by Siamese forces under King Naresuan, after which Cambodia became a vassal of Siam.

Siamese cat (แมวสยาม)

Siamese cat (แมวสยาม), also Wichien Maat or Royal Cat of Siam, a Thai cat breed with pale body, dark points, and blue eyes; recognized by CFA in 1906 in seal, chocolate, blue, and lilac point colors.

Siamese conquest of Vientiane

The Siamese conquest of Vientiane was King Taksin's 1778–1779 campaign by Siam's Thonburi kingdom that captured the Lao capital and made the Lao states tributaries of Siam.

Siamese coup d'état of June 1933

The Siamese coup d'état of June 1933 (รัฐประหาร 20 มิถุนายน 2476) was the seizure of power in Bangkok on 20 June 1933 by Colonel Phraya Phahon, who forced Prime Minister Phraya Manopakorn Nititada to resign.

Siamese Dream

Siamese Dream is the Smashing Pumpkins' second album, released July 27, 1993 on Virgin, produced by Butch Vig and Billy Corgan at Triclops Sound Studios, Atlanta; known for massive layered Big Muff guitar walls, six million sales, and singles Cherub Rock, Today, Disarm, and Rocket.

Siamese embassy to France (1686)

The 1686 Siamese embassy to France, led by Kosa Pan with Ok-luang Kanlaya Ratchamaitri and Ok-khun Sisawan Wacha, ratified 1685 commercial treaties with Louis XIV at Versailles on 1 September 1686.

Siamese Expeditionary Force

The Siamese Expeditionary Force (กองทหารอาสาสยาม) was a volunteer force of 1,284 men raised by King Vajiravudh of Siam to fight with the Allies in World War I.

Siamese fighting fish

Siamese fighting fish (Betta splendens), or betta, a Southeast Asian labyrinth fish with an air-breathing organ; domesticated for staged fights since the 14th century, now a leading ornamental species with documented welfare concerns in small containers.