factor XII
— Noun
– English
~ coagulation factor whose deficiency results in prolongation of clotting time of venous blood
factor XIII
— Noun
– English
~ in the clotting of blood thrombin catalyzes factor XIII into its active form (fibrinase) which causes fibrin to form a stable clot
family Xiphiidae
— Noun
– English
~ comprising the common swordfishes
family Xylariaceae
— Noun
– English
~ family of fungi characterized by dark brown to black spores
family Xyridaceae
— Noun
– English
~ plants of tropical to temperate regions; usually in wet places
Felis yagouaroundi
— Noun
– English
~ long-bodied long-tailed tropical American wildcat
front yard
— Noun
– English
~ the yard in front of a house; between the house and the street
fourth-year
— Adjective
– English
~ used of the fourth and final year in United States high school or college; "the senior prom"
four-year-old
— Adjective
– English
~ four years of age
five-year-old
— Adjective
– English
~ five years of age
first-year
— Adjective
– English
~ used of a person in the first year of an experience (especially in United States high school or college); "a freshman senator"; "freshman year in high school or college"
fiscal year
— Noun
– English
~ any accounting period of 12 months
financial year
— Noun
– English
~ any accounting period of 12 months
Florida yew
— Noun
– English
~ small bushy yew of northern Florida having spreading branches and very narrow leaves
frozen yogurt
— Noun
– English
~ a soft frozen dessert of sweetened flavored yogurt
Fountain of Youth
— Noun
– English
~ 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
— Noun
– English
~ 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
— Noun
– English
~ 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
family Zamiaceae
— Noun
– English
~ a family of cycads often included in the family Cycadaceae: zamias