unit
Unit may refer to:
Arts and entertainment
* UNIT, a fictional military organization in the science fiction television series ''Doctor Who''
* Unit of action, a discrete piece of action (or beat) in a theatrical presentation
Music
* ''Unit'' (a ...
of
mass
Mass is an intrinsic property of a body. It was traditionally believed to be related to the quantity of matter in a physical body, until the discovery of the atom and particle physics. It was found that different atoms and different element ...
(or weight in the colloquial sense) historically used in Mainland Southeast Asia, particularly in the predecessor states of
Myanmar
Myanmar, ; UK pronunciations: US pronunciations incl. . Note: Wikipedia's IPA conventions require indicating /r/ even in British English although only some British English speakers pronounce r at the end of syllables. As John Wells explai ...
, where it is known as the ''kyat'' (''kyattha''), and of
Cambodia
Cambodia (; also Kampuchea ; km, កម្ពុជា, UNGEGN: ), officially the Kingdom of Cambodia, is a country located in the southern portion of the Indochinese Peninsula in Southeast Asia, spanning an area of , bordered by Thailan ...
and
Thailand
Thailand ( ), historically known as Siam () and officially the Kingdom of Thailand, is a country in Southeast Asia, located at the centre of the Indochinese Peninsula, spanning , with a population of almost 70 million. The country is b ...
, where it is known as the ''baht'' (''bat''). It formed the basis of the modern currencies the Myanmar kyat and the
Thai baht
The baht (; th, บาท, ; sign: ฿; code: THB) is the official currency of Thailand. It is divided into 100 ''satang'' (, ). The issuance of currency is the responsibility of the Bank of Thailand. SWIFT ranked the Thai baht as the 10th-m ...
, as well as the historical Cambodian tical, which were originally valued as the unit's weight of silver. It remains in widespread use in Myanmar, where it is approximately equivalent to , and in the gold trade in Thailand, where it is defined as for bullion and for jewellery. For other uses, the ''baht'' is defined in Thailand as exactly .
The unit probably arose from multiple origins. In Burma, it was likely equivalent to the Mon unit ''diṅkel'', which is mentioned in several thirteenth-century inscriptions from northern Thailand and may have originated in India, while in the Khmer Empire, it was probably derived as a subdivision equalling a quarter of the ''
'' (known in Khmer as ''damleng'' and in Thai as ''tamlueng''), which in turn was introduced through the region's extensive trade with China. The Thais adopted the Khmer units as the
Ayutthaya Kingdom
The Ayutthaya Kingdom (; th, อยุธยา, , IAST: or , ) was a Siamese kingdom that existed in Southeast Asia from 1351 to 1767, centered around the city of Ayutthaya, in Siam, or present-day Thailand. The Ayutthaya Kingdom is consi ...
displaced the Khmer Empire in the fifteenth century, and as Ayutthaya gained control of the east coast of the
Andaman Sea
The Andaman Sea (historically also known as the Burma Sea) is a marginal sea of the northeastern Indian Ocean bounded by the coastlines of Myanmar and Thailand along the Gulf of Martaban and west side of the Malay Peninsula, and separated fro ...
and developed cross-peninsular trade, the units, of roughly the same size, probably became regarded as equivalent by traders, including the Portuguese, who popularized its recognition by Westerners as the ''tical''.