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TonB-dependent vitamin B12 transporter BtuB
BtuB, the TonB-dependent vitamin B12 (cobalamin) transporter of E. coli and Salmonella, a 22-stranded beta-barrel outer membrane protein with a plug domain, also used by E colicins and phage BF23.
TonB-system energizer ExbB type-1
TonB-system energizer ExbB type-1: inner-membrane ExbB protein family of the Gram-negative TonB-ExbB-ExbD motor, homologous to MotA and TolQ, pentameric scaffold coupling proton motive force to outer-membrane nutrient transport.
Tonberry
Tonberry, recurring Final Fantasy monster (first in FFV, once localized as Dingleberry or Pug): green robed lantern-carrier with a butcher knife, Chef's Knife and Karma attacks, Master Tonberry and Tonberry King variants, summonable in FFVIII.
Toncontín International Airport
Toncontín International Airport (Aeropuerto Internacional Toncontín) is an airport in Tegucigalpa, Honduras, famous for its short runway and difficult mountainous approach, and its last international flight arrived in 2021.
Tonda Eckert
Tonda Eckert (Tonda Mateo Eckert, born 1993), German football coach and Southampton head coach since November 2025; sanctioned in the 2026 Spygate affair with a suspended six-week FA ban and £28,000 fine.
Tonda Wildlife Management Area
Tonda Wildlife Management Area, Western Province, Papua New Guinea; also a Ramsar site (no. 591, 1993). PNG's largest and oldest WMA, 590,000 ha of Transfly savanna wetlands with over 250 waterbird species, managed by an indigenous committee.
Tondern raid
The Tondern raid was a British bombing attack on 19 July 1918 by seven Sopwith Camels from HMS Furious that destroyed the airships L 54 and L 60 at Tønder.
Tondo Conspiracy
The Tondo Conspiracy, also known as the Conspiracy of the Maharlicas, was a 1587–1588 plot by Tondo and Manila nobles to overthrow Spanish rule in the Philippines.
Tondo, Manila
Tondo is Manila's most populous district (654,220 in 2020), on Manila Bay at the Pasig River delta, a precolonial polity by 900 A.D., now split into Tondo I and II with North Harbor port and large informal settlements.
Tone (linguistics)
Tone (linguistics): the within-syllable use of pitch to contrast word meanings, also called lexical tone, distinct from pitch accent and stress. Covers tonogenesis, tone sandhi, mergers, and tonoexodus.
Tone (literature)
Tone (literature): the attitude a writer, narrator, or speaker conveys toward a subject, expressed through diction, syntax, imagery, and figurative language; distinct from mood, the feeling a text creates in the reader.
Tone Bell
Tone Bell, stage name of Michael Anthony Bell II (born 1983, Decatur, Georgia), is an American stand-up comedian and actor known for NBC's Whitney, Truth Be Told, Bad Judge, CBS's Fam, Netflix's Survival of the Thickest, and his Showtime special Can't Cancel This.
Tone discrimination task
The tone discrimination task is an auditory perception test in which a listener judges whether two or more tones are the same or differ in pitch, measuring frequency discrimination.
Tone injection
Tone injection is a distortionless peak-to-average power ratio reduction technique for multicarrier transmission systems such as OFDM and DMT, introduced by José Tellado and John Cioffi at Stanford University in 1998.
Tone Kajzer
Tone Kajzer, born in 1966, is a Slovenian politician and diplomat of the Slovenian Democratic Party who has been Minister of Foreign and European Affairs since 2026.
Tone Loc
Tone Loc (Anthony Terrell Smith, born 1966), American rapper and actor from Los Angeles. His 1989 hits Wild Thing and Funky Cold Medina were among the first platinum rap singles; Loc-ed After Dark was the second rap album to top the Billboard 200.
Tone mapping
Tone mapping is an image processing operation that compresses the dynamic range of high dynamic range images and video to fit displays while preserving detail, contrast, and appearance.
Tone matching
Tone matching is an auditory perception task in which a listener judges whether two tones match in pitch, used to measure pitch discrimination and assess conditions like amusia.
Tone reservation
Tone reservation (TR) is a distortionless PAPR reduction technique for OFDM in which reserved subcarriers carry no data and instead transmit a peak-canceling signal, used in standards like DVB-T2 and ATSC A/322.
Tone row
Tone row (German Reihe or Tonreihe): ordered, non-repeating arrangement of all twelve chromatic pitch classes, the basis of Schoenberg's 1921 twelve-tone technique, used in prime, retrograde, inversion, and retrograde inversion forms.
Tone Wieten
Tone Wieten (born 1994, Amsterdam) is a Dutch rower, two-time Olympic champion in the men's quadruple sculls (Tokyo 2020, Paris 2024) and Rio 2016 eight bronze medallist; world champion 2019 and 2023; retired March 2025.
Toner (skin care)
Toner (skin care): water-based liquid applied after cleansing, before serum or moisturizer. Modern types are hydrating, exfoliating (AHA/BHA), or soothing; dermatologists consider it optional, unlike the old alcohol-based astringents.
Toneri Shinnō
Toneri Shinnō (舎人親王) was a Japanese imperial prince, son of Emperor Tenmu, who directed the Nihon Shoki chronicle presented in 720 and headed the Council of State.
Tones and I
Tones and I is the stage name of Toni Watson, an Australian singer-songwriter whose 2019 single "Dance Monkey" topped charts in over 30 countries and set an Australian record for weeks at number one.
ToneTag
ToneTag, legally Naffa Innovations Pvt. Ltd, is a Bengaluru deeptech payments startup founded in 2013 by Kumar Abhishek and Vivek Singh that transmits encrypted payments over sound waves.
Tonfa
Tonfa (トンファー, 旋棍; tunfa, tuifa): Okinawan kobudo weapon, a wooden stick with a perpendicular handle wielded in pairs, traditionally derived from a millstone handle and the basis of the PR-24 side-handle police baton.
Tong (堂) (organization)
Tong (堂), Chinese for association, names fraternal organizations in North American Chinatowns that provided mutual aid to Chinese immigrants and, in some cases, ran vice businesses; the Hip Sing and On Leong tongs fought 19-year tong wars.
Tống Duy Tân
Tống Duy Tân (1838–1892) was a Vietnamese mandarin, a Nguyễn dynasty doctoral degree holder who led the Hùng Lĩnh uprising (1886–1892), an anti-French resistance in Thanh Hóa province.
Tong Fengcai
Tong Fengcai (佟凤彩, 1622–1677) was a Qing dynasty civil administrator of the Han Army Plain Blue Banner who served as governor of Sichuan, Guizhou, and Henan, known for fiscal and labor reforms.
Tong Fuk (塘福)
Tong Fuk (塘福) is a coastal village on South Lantau, Hong Kong, recorded in the 1595 Yue Daji and 1819 Xin'an Gazetteer, with Bronze Age archaeology, a 1802 Hung Shing Temple, and New Lantao Bus routes 1, 2, 4, 11, 11A, 23 and N35.