family Xenicidae
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– Engelsk
~ alternative names for the family comprising the New Zealand wrens
family Xenopodidae
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~ in some classifications the family of the genus Xenopus which is otherwise included in the family Pipidae
family Xenosauridae
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~ monotypic family of Mexican lizards
factor XI
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~ coagulation factor whose deficiency results in a hemorrhagic tendency
factor XII
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~ coagulation factor whose deficiency results in prolongation of clotting time of venous blood
factor XIII
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~ in the clotting of blood thrombin catalyzes factor XIII into its active form (fibrinase) which causes fibrin to form a stable clot
family Xiphiidae
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~ comprising the common swordfishes
family Xylariaceae
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~ family of fungi characterized by dark brown to black spores
family Xyridaceae
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~ plants of tropical to temperate regions; usually in wet places
Felis yagouaroundi
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~ long-bodied long-tailed tropical American wildcat
front yard
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~ the yard in front of a house; between the house and the street
fiscal year
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~ any accounting period of 12 months
financial year
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~ any accounting period of 12 months
Florida yew
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~ small bushy yew of northern Florida having spreading branches and very narrow leaves
frozen yogurt
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~ a soft frozen dessert of sweetened flavored yogurt
Fountain of Youth
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~ a fountain described in folk tales as able to make people young again; "Ponce de Leon discovered Florida while searching for the Fountain of Youth"
first battle of Ypres
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~ battle in World War I (1914); heavy but indecisive fighting as the Allies and the Germans both tried to break through the lines of the others
Federal Republic of Yugoslavia
— Navneord
– Engelsk
~ a mountainous republic in southeastern Europe bordering on the Adriatic Sea; formed from two of the six republics that made up Yugoslavia until 1992; Serbia and Montenegro were known as the Federal Republic of Yugoslavia until 2003 when they adopted the name of the Union of Serbia and Montenegro