All articles starting with O
9,097 articles
Ooooooohhh... On the TLC Tip
Ooooooohhh... On the TLC Tip is TLC's 1992 debut album on LaFace Records, a new jack swing record whose title comes from Left Eye's rap on "Ain't 2 Proud 2 Beg"; it peaked at No. 14 on the Billboard 200 and went 4x Platinum.
Ooosh Tech Lab
Ooosh Tech Lab, also known as Catalyst Ventures, is a Hong Kong venture capital firm and startup incubator founded in 2016 by Alex Cheng, Jamie Cheung, and Jeffrey Cheng.
Oophaga
Oophaga (egg-eater) is a genus of 12 Neotropical poison frogs, sister to Dendrobates, ranging from Nicaragua to Ecuador, whose females feed tadpoles with alkaloid-containing trophic eggs in bromeliads; type species Oophaga pumilio.
Oophaga sylvatica
Oophaga sylvatica (Diablito, Little Devil Poison Frog) is a poison frog of Dendrobatidae from northwestern Ecuador and southwestern Colombia, ant- and mite-feeding, egg-feeding to tadpoles, and highly color-polymorphic.
Oophorectomy
Oophorectomy: surgical removal of one or both ovaries (ovariectomy, ovariotomy), alone or with fallopian tubes as salpingo-oophorectomy. Performed for ovarian disease, cancer treatment, and genetic risk reduction; long-term trade-offs include surgical menopause and cardiovascular mortality.
Oopiri (தோழா)
Oopiri (ఊపిరి), also released in Tamil as Thozha (தோழா), is a 2016 Telugu-Tamil bilingual comedy-drama directed by Vamshi Paidipally, an official remake of the French film The Intouchables, starring Nagarjuna as a quadriplegic billionaire and Karthi as his caretaker, released 25 March 2016.
Oops Ab Kya?
Oops Ab Kya? (ऊप्स अब क्या?) is a 2025 Hindi comedy-drama web series on JioHotstar, an official adaptation of Jane the Virgin, starring Shweta Basu Prasad as Roohi, produced by Dice Media in 8 episodes.
Oops!... I Did It Again (album)
Oops!... I Did It Again, Britney Spears' second studio album (Jive, May 16, 2000), was produced mainly by Max Martin and Rami Yacoub at Cheiron Studios and sold about 1.3 million US copies in its first week, a female-artist record at the time.
Oops!... I Did It Again (song)
"Oops!... I Did It Again" is a 2000 pop single by Britney Spears, lead single of her second album, written and produced by Max Martin and Rami Yacoub. UK number one, US Hot 100 number 9, quadruple platinum, known for its Titanic spoken bridge and counterpoint ending.
Oorblyfsels
Oorblyfsels (Afrikaans for "remains") is the shared title of three poetry collections by the South African poet Breyten Breytenbach, published in 1970, 1997, and 2009.
Ooredoo (أريدو)
Ooredoo (أريدو) is a Qatari telecommunications company, formerly Qtel, serving nearly 150 million customers across nine markets in the Middle East, North Africa, and Southeast Asia.
Oort (crater on Pluto)
Oort is a 123-km IAU-approved impact crater on Pluto near the equator, adopted February 3, 2021 and named for Dutch astronomer Jan Oort, describer of the Oort Cloud; it is a key site for studying viscous relaxation and Pluto's early heat flow.
Oort cloud
The Oort cloud, sometimes called the Öpik–Oort cloud, is a vast spherical shell of icy bodies at the outer edge of the Solar System, proposed by Jan Oort in 1950.
Ooru Peru Bhairavakona (ఊరు పేరు భైరవకోన)
Ooru Peru Bhairavakona (ఊరు పేరు భైరవకోన) is a 2024 Telugu supernatural fantasy thriller directed by Vi Anand, starring Sundeep Kishan, Varsha Bollamma, and Kavya Thapar; released 16 February 2024, streamed on Prime Video from 8 March 2024.
Oosaravelli (ఊసరవెల్లి)
Oosaravelli (ఊసరవెల్లి, "chameleon") is a 2011 Telugu action-romance film directed by Surender Reddy, starring Jr NTR as Tony and Tamannaah as Niharika, released 6 October 2011 with music by Devi Sri Prasad.
Oospore
Oospore: the thick-walled sexual resting spore of oomycetes (water molds) and certain algae and fungi, formed by fusion of an oogonium and an antheridium; non-motile, dormant in soil, and the primary long-term survival structure of pathogens like Pythium and Phytophthora.
Oosterscheldekering
The Oosterscheldekering (Eastern Scheldt storm surge barrier) is a 9 km movable flood barrier in Zeeland, the largest of the Netherlands' Delta Works, opened in 1986.
Oostvoorne
Oostvoorne, village on Voorne island, South Holland, at the Maas mouth; seat of the Lords of Voorne with the Jacobaburcht motte castle, a presumed Roman fort, and WWII Biberbunker radar position.
OOTORO
OOTORO is an Indonesian DJ and producer from Jakarta, known for bass house, disco, and tech house and for the 2021 hit "Beat Like This" with Bleu Clair on STMPD RCRDS.
Ooty
Ooty (Udhagamandalam, உதகமண்டலம்) is a 2,203 m hill town and Nilgiris District capital in Tamil Nadu, India; a British summer capital reached by the UNESCO-listed rack railway from Mettupalayam.
Op art
Op art (optical art) is a 1960s abstract art movement using geometric patterns and contrast to create illusions of movement on static surfaces; named by Time in 1964, peaked with MoMA's The Responsive Eye, 1965; led by Vasarely and Riley.
Op-ed
Op-ed, from "opposite the editorial" page: a signed opinion essay by an outside contributor arguing a position on a public issue. Traces to the 1921 New York World and the 1970 New York Times page; typically 700 to 1,200 words.
OP-TEE
OP-TEE (Open Portable Trusted Execution Environment) is an open-source Trusted Execution Environment for Arm Cortex-A cores using TrustZone, isolating trusted applications from Linux and implementing the GlobalPlatform TEE APIs.
Opa Oranmiyan
Opa Oranmiyan (Ọpá Ọ̀rànmíyàn) is a granite monolith about 5.5 meters tall in a grove at Ile-Ife, Nigeria, studded with iron nails and linked to the Yoruba ancestor Oranmiyan.
Opa-locka, Florida
Opa-locka is a city in Miami-Dade County, Florida, founded May 14, 1926 by aviator Glenn Curtiss with architect Bernhardt Muller around an Arabian Nights theme, known for its Moorish Revival architecture, 20 National Register buildings, and 2020 population of 16,463.
OPA1
OPA1 (optic atrophy 1) is a human gene on chromosome 3q29 encoding an inner mitochondrial membrane dynamin-like GTPase that drives inner membrane fusion, cristae integrity, mtDNA maintenance, and apoptosis regulation; mutations cause dominant optic atrophy.
Opabinia
Opabinia regalis, a five-eyed Burgess Shale predator with a claw-tipped proboscis, about 505 million years old; a lower stem-group euarthropod, first described by Walcott in 1912 and redescribed by Whittington in 1975.
Opacity (optics)
Opacity is a measure of how well a material hides a surface behind it or blocks the transmission of light, defined quantitatively in printing, coatings, metallizing, and astrophysics.
Opah
Opah, or moonfish (Lampris spp.), is a large deep-bodied pelagic fish and the only known fully warm-blooded fish, heating its body via pectoral fin flapping and gill heat exchangers; a five-species complex caught as bycatch in tuna and swordfish fisheries.
Opal
Opal, historically called ceraunium, is a hydrated amorphous form of silica prized as a gemstone for its play-of-color, with Australia supplying about 95% of the world's precious opal.