All articles starting with Y

Yolane Kukla

Yolane Kukla, Australian sprint swimmer from Brisbane (St. Peters Western club), Olympic gold medallist in the 4x100 m freestyle relay at London 2012 and 2010 Commonwealth Games 50 m freestyle champion.

Yoldia Sea

Yoldia Sea: brackish Baltic Sea stage, 11.7–10.7 ka BP, between the Baltic Ice Lake and Ancylus Lake, connected to the ocean via the Närke Strait in central Sweden.

Yolina Lindquist

Yolina Serafina Lindquist, American beauty queen from Metropolis, Illinois, won Miss Cosmo 2025 in Ho Chi Minh City on 20 December 2025, the pageant's second titleholder and first American winner, succeeding Ketut Permata Juliastrid.

Yolk

Yolk, the lipid- and vitellogenin-rich nutrient deposit in eggs, sustains embryos via the yolk sac; lost in placental mammals after lactation and placentation evolved.

Yolk cell

Yolk cell: the giant uncleaved syncytial cell holding the yolk mass in meroblastic embryos (teleosts, birds, monotremes); in zebrafish it forms the yolk syncytial layer (YSL), which patterns mesoderm and endoderm via Nodal signaling and supplies nutrition until larval day 5.

Yolk sac

The yolk sac, also called the umbilical vesicle, is a membrane-enclosed sac on the ventral side of the early embryo that supplies nutrition until blood circulation forms.

Yolk sac tumor

Yolk sac tumor (endodermal sinus tumor), a malignant germ cell tumor of ovary, testicle, or extragonadal sites; AFP-secreting, most common malignant germ cell tumor in children, curable with platinum chemotherapy.

Yolka (Ёлка) (drone interceptor)

Yolka (Ёлka), Russian for "fir tree," is a single-use Russian interceptor drone launched from a handheld catapult that destroys enemy drones by kinetic ramming, first observed in May 2025.

Yolkai-Estsan Mons

Yolkai-Estsan Mons is a 600-km-diameter shield volcano on Venus at 17N, 194E in the Ganis Chasma rift zone, Atla Regio; named for a Navajo female deity (IAU, 1997), it is heavily fault-dissected and older than the rifting.

YOLO (aphorism)

YOLO (you only live once) is a slang acronym justifying impulsive or reckless choices, popularized by Drake's 2011 song "The Motto" though older, with a 1993 trademark and 1896 sentence attestation.

YOLO (热辣滚烫) (film)

YOLO (热辣滚烫) is Jia Ling's 2024 Chinese comedy-drama, a remake of 100 Yen Love, about a woman rebuilding her life through boxing; it topped the 2024 Spring Festival and annual Chinese box office at RMB 3.46 billion.

Yolo Bypass

The Yolo Bypass is a leveed flood-control basin in the Sacramento Valley west of Sacramento that routes Sacramento River floodwaters south to the Sacramento–San Joaquin Delta.

Oct 20, 2026

Yolo County

Yolo County, California: original 1850 county in the Sacramento Valley west of Sacramento; seat Woodland; cities Davis, West Sacramento, Winters, Woodland; 216,403 residents (2020); agriculture and UC Davis dominate.

Sep 27, 2026

Yolonda Morris

Yolonda Morris is a Democratic member of the Illinois House of Representatives from Chicago's 9th district, a former nurse assistant and union organizer focused on health care access and worker protections.

YOLOv3

YOLOv3 (You Only Look Once, version 3) is a real-time object detection model released by Joseph Redmon and Ali Farhadi in April 2018, using the Darknet-53 backbone.

YOLOv4

YOLOv4 (You Only Look Once, version 4) is a one-stage real-time object detection network released in April 2020, reporting 43.5% AP on MS COCO at about 65 FPS.

YOLOv5

YOLOv5 is a family of open-source, real-time object detection models written in PyTorch and first released in 2020 by Ultralytics, a company founded by Glenn Jocher, licensed under AGPL-3.0.

Sep 29, 2026

YOLOv8

YOLOv8 is a single-stage deep learning model for object detection released by Ultralytics in January 2023, which also ships pretrained models for segmentation, classification, and pose estimation.

YOLT-202

YOLT-202 (SERP-01) is YolTech Therapeutics' LNP-delivered adenine base-editing therapy correcting the SERPINA1 PiZ mutation for alpha-1 antitrypsin deficiency; FDA IND cleared March 2026 for a Phase 2/3 trial.

Yom

The Yom River (Thai: แม่น้ำยม, Maenam Yom) is a 735 km river in northern Thailand and a principal tributary of the Nan River, part of the Chao Phraya system.

Yom HaShoah (יום השואה)

Yom HaShoah (יום השואה), formally Yom HaZikaron LaShoah ve-laGevurah, is Israel's national remembrance day for the six million Jews murdered in the Holocaust, observed on 27 Nisan since 1951.

Yom Kippur (יוֹם כִּפּוּר)

Yom Kippur, also called the Day of Atonement, is the holiest day of the Jewish year, observed with a 25-hour fast on the 10th of Tishrei.

Yom Kippur balls

Yom Kippur balls (Yonkiper beler) were antireligious festivities held by Jewish anarchists on the Day of Atonement from London 1888 through New York, Philadelphia, and Montreal, featuring eating, lectures, and mockery of the fast.

Yom Kippur War (מלחמת יום כיפור)

Yom Kippur War (מלחמת יום כיפור), also October or Ramadan War: Egypt and Syria's surprise attack on Israel, October 6, 1973, on Sinai and Golan; led to oil embargo, Agranat Commission, 1979 peace treaty.

Oct 22, 2026

Yom Sang-seop

Yom Sang-seop (염상섭, 1897–1963) was a Korean novelist and critic who helped establish the realist modern novel in colonial Korea; his masterwork is Three Generations (1931).

Yombo Marine Oil and Gas Field

Yombo Marine Oil and Gas Field, also called Yombo-Masseko, is an offshore heavy oil field in the Republic of the Congo near Pointe-Noire, producing since 1991.

Yomi (黄泉)

Yomi (黄泉), also Yomotsukuni, is the underworld of the Kojiki and Nihon shoki, the land Izanami entered after dying in childbirth of the fire god, from which Izanagi fled after seeing her decayed body and sealed with a great boulder.

Oct 22, 2026

Yomihon

Yomihon (読本), literally "reading books", are woodblock-printed Edo-period prose novels that arose in Kamigata around 1748 and flourished in Edo, including Ueda Akinari's Ugetsu monogatari and Kyokutei Bakin's Nansō Satomi hakkenden.