chum salmon
fish
also called calico salmon, or dog salmon
(Oncorhynchus keta), lightly speckled North Pacific fish, family Salmonidae, weighing up to 15 kg (33 pounds). During the spawning season in autumn, it may swim more than 3,200 km (2,000 miles) up the Yukon River. (See also salmon.)- fluorescein
- fluorescence in situ hybridization
- fluorescence photography
- fluorescent lamp
- fluoride deficiency
- fluorine
- fluorite
- fluorocarbon
- fluoroscope
- fluorosis
- Flushing
- flute
- flutemouth
- fluting and reeding
- flutter and wow
- uranium series
- uranium-thorium-lead dating
- Uranus
- Urartian language
- Urartu
- Ura-Tyube
- Urayasu
- Urbain-Jean-Joseph Le Verrier
- Urbana
- urban climate