xi

plural xis

1. The 14th letter of Classical and Modern Greek. The 15th in Ancient and Old Greek.
2. particlenatural sciencesEither of a pair of hyperons having spin 1/2, which decay into a lambda particle and a pion.

plural XIs

1. ball gamesA football (soccer) team of eleven players.

   1 more example

   Rewind to the first day of the inaugural Premier League season in August 1992 and 177 players – or 73.1% – featuring in first XIs held English nationality. […] Not since Coventry in 1992 has a Premier League side kicked off a campaign with an all-English XI but things have reached the point where, of the 61 signings who have cost the elite division's 20 clubs a transfer fee this summer, only 12 have involved Englishmen.

   2013 August 20, Louise Taylor, “English talent gets left behind as Premier League keeps importing”, in The Guardian

2. ball gamesA cricket team of eleven players.

alternative Hsi · alternative Si

1. A river in China, the western tributary of the Pearl.

   A sand barge struck a bridge over the Xi River between Heshan and the town of Jiujiang in Guangdong yesterday morning, bringing down a section of the structure at least 200 metres long.

   2007 June 16, Ivan Zhai, “Sand barge brings down Xi River bridge”, in South China Morning Post, →ISSN, →OCLC, archived from the original on 19 Sep 2024

   2 more examples

   The most important inland water transport takes place along three great rivers, the Xi-jiang (West River) by Guangzhou (Canton); the Yangzi Jiang, which links Shanghai, Wuhan and Chongqing (Chungking); and the Songhua Jiang (Sungari) which passes through Ha’erbin (Harbin) in the north-east.

   [1979, Ronald Francis Price, Education in Modern China, Routledge & Kegan Paul, →ISBN, →OCLC, page 93

   My slow boat to China began and ended last spring in Hong Kong. For the first leg of the journey, I headed northwest into China on the Xi River, leaving Tai Kok Tsui Pierat dawn for the 10-hour Hovercraft ride from Hong Kong to Wuzhou.

   1986 April 12, Jeannette Belliveau, “Chinese Byways By Water: Slow Boats And Glimpses Of Everyday Life”, in The New York Times, →ISSN, →OCLC, archived from the original on 26 Sep 2025, Lifestyle

plural Xis · alternative Hsi

1. A surname from Chinese
   1. Xi Jinping, current General Secretary of the Chinese Communist Party (2012–present).

      Across the water, which is 110 miles wide, is Fujian province, where Xi spent 17 years climbing the political ladder before making the leap to the national stage.

      2022 November 5, Philip Sherwell, “We don’t think China will invade Taiwan. But if they do we’ll fight them”, in The Times, →ISSN, →OCLC, archived from the original on 05 Nov 2022

      1 more example

      Vice President Xi (pronounced “Shee”), expected to succeed Hu Jintao as president from early 2013, will inherit responsibility for his nation’s far-reaching and sometimes troublesome relationship with the United States.

      2011 August 17, Jeff Mason, Chris Buckley, “China, U.S. seek to boost confidence as Biden visits”, in Brian Rhoads, Alex Richardson, editors, Reuters, archived from the original on 29 Jun 2023

alternative Hsi

1. A county of Linfen, Shanxi, China.

   The 203rd Brigade was blocked by the Red 25th Army, a battalion was wiped out in Xi County, and the battalion commander and more than 200 soldiers were captured.

   2017, Mao Min, The Revival of China, →ISBN, page 158

   5 more examples

   Daning County is located in the south of Luliang Mountain and west of Linfen City in Shanxi Province. Pu County and Xi County are to the east of Daning County,[...]

   2016, Yanyun Wei, Aiguo Zhang, “The Study on Migration and Poverty Alleviation Planning of Daning County”, in Open Journal of Social Sciences, volume 4, number 4, →DOI, →ISSN, →OCLC

   To help the sales of agricultural products is an effective means of poverty alleviation. In 2017, the Company purchased pears from Xi County of Linfen, Shanxi Province twice at a total cost of 1,329,400 yuan; in August 2017, the Company spent RMB260,000 on melon bought from Maigaiti County of Xinjiang;[...]

   2017, “2017 Annual Report”, in CITIC Securities, archived from the original on 10 Jun 2021

   In April,2004, 36 people died in Shanxi’s Xi County coal-mining accident. The provincial governor, Zhang Baoshun (Governor Zhang), having been promoted to his position only two months prior to the accident, was shocked by the chaotic conditions of property rights and the consequential predatory mining activities when he arrived at the scene.

   2018 October 17, Lan Xue, Jing Zhao, “Truncated Decision Making and Deliberative Implementation: A Time-Based Policy Process Model for Transitional China”, in Policy Studies Journal, volume 48, number 2, →DOI, →ISSN, →OCLC, page 19

   As the new round of the fight against poverty began, he was assigned to take up the provisional post of deputy chief of Yangtousheng Township, Xi County, Linfen City.

   2020, Lu Shunmin, Yang Yao, Chen Kehai, Pathway to Prosperity: China's Poverty Alleviation with a Case Study of Shanxi Province Editorial Board, →ISBN

   The systematic dust avoidance effect of Small Xitian building complex in Xi county is rare in the history of science and technology at home and abroad, which confirms the scientific nature of the dust avoidance effect of ancient temple buildings in China and plays a reference role in the research on dust avoidance protection of other ancient buildings in China.

   2020, Dongdong Yang, Wenqing Wu, “An Analysis on Dust Avoidance Effect of the Building Complex of Small Xitian in Xi County”, in Journal of Civil, Construction and Environmental Engineering, volume 5, number 3, →DOI, page 59

   Synonyms: Xixian

plural Xis

1. Capital Greek letter Ξ (X)
   1. alternativeAlternative form of xi, Greek letter Ξ/ξ (X/x)
2. alternativenatural sciencesAlternative form of xi/Ξ, ellipsis of xi baryon.