11th

11th is the ordinal form of the number eleven. It is used to indicate the position of an object in a sequence, such as the 11th item or the 11th day in a month.

In writing, the ordinal is often shown as 11th in numerals or as eleventh in words. In Roman numerals, eleven is XI.

Dates and locations: in English, ordinals are used in dates (the 11th of December) and in street names or addresses (11th Street, 11th Avenue).

In history, the 11th century covers the years 1001 to 1100 CE, a period that saw events such as the Norman conquest of England in 1066 and the start of the Crusades toward the end of the century.

In law, the Eleventh Amendment to the Constitution of the United States, ratified in 1795, prohibits most lawsuits against states in federal courts by citizens of another state or by foreign citizens; it embodies state sovereign immunity in many contexts.

In science, the 11th element of the periodic table is sodium (Na), an element with atomic number 11.

11 in Roman numerals is XI, used in various enumerations and markings.

The phrase the eleventh hour denotes a last-minute or urgent deadline.