IpiutakA culture that arose possibly as early as 100–200 BCE and collapsed around 800 CE, found from the south of the Bering Strait, across the Brooks Range and possibly as far north as Point Barrow.
IpixunaA river in the states of Rondônia and Amazonas, Brazil; a tributary of the Purus River
ipnopidAny fish in the family Ipnopidae of deepsea tripod fishes.
IPOTo launch an initial public offering, to go public.
IpohThe capital city of the state of Perak, Malaysia.
ipolamiideA naturally occurring iridoid glycoside found in a number of plants including Stachytarpheta dichotoma and Plantago euphratica.
ipomeanineA diketone derivative of furan, produced by Ceratostomella fimbriata, a mold that grows on sweet potato, 1-(furan-3-yl)pentane-1,4-dione
ipomoeaAny of various twining plants of the genus Ipomoea with showy monopetalous flowers, including the morning glory, the sweet potato, and the cypress vine.
ipomoeinA glucoside obtained from Ipomoea pandurata.
ipomovirusAny virus, of the genus Ipomovirus, that infect sweet potatoes (of the genus Ipomoea)
iposThe tuber of any one of several edible species of Perideridia spp.
ipotaneA mythical creature depicted as a half-human, half-horse that is supposedly different from a centaur, sometimes attributed to Greek mythology.
ippatsuA yaku awarded for winning before the end of the player's next turn after declaring riichi
IpplepenA village and civil parish in Teignbridge district, Devon, England (OS grid ref SX8366).
ipponThe highest score in judo, awarded for a throw that places the opponent on their back with impetus or for holding the opponent on their back for a number of seconds.
ipratropiumAn anticholinergic drug C₂₀H₃₀NO₃⁺ that is used as an inhalational aerosol for bronchodilation especially in the treatment of chronic obstructive pulmonary disease and as a nasal spray in the treatment of runny nose associated with rhinitis.
iprazochromeA serotonin antagonist used as an antimigraine agent.
iqcelA person regarded as lacking intelligence despite claiming to have a high IQ.
IQedhaving a specified intelligence quotient (IQ).
IQerSomeone who has a specified intelligence quotient (IQ).
IqglicAn English-based constructed language created by Jack Eisenmann in 2011.
iqletA person considered very unintelligent or foolish; idiot, moron.
iqmikA smokeless tobacco product used mainly by Native Americans in parts of Alaska, made from a mixture of tobacco and the ash of the fungus Phellinus igniarius.
iqtaThe Islamic practice of farming out tax revenues yielded by land granted temporarily to army officials in place of a regular wage.