Decade vs. Tricenarian — What's the Difference?

A decade is a period of 10 years. The word is derived (via French and Latin) from the Ancient Greek: δεκάς, romanized: dekas, which means a group of ten.

The highest rank and pay grade for prefectures in Ancient Rome

A period of ten years.

A person in their thirties, a person aged between 30 and 39 years (inclusive).

A group or series of ten.

A group, set, or series of ten , particularly:

A period of ten years , particularly such a period beginning with a year ending in 0 and ending with a year ending in 9.

A period of ten days, (history) particularly those in the ancient Egyptian, Coptic, and French Revolutionary calendars.

A work in ten parts or books, particularly such divisions of Livy's History of Rome.

(Roman Catholicism) A series of prayers counted on a rosary, typically consisting of an Our Father, followed by ten Hail Marys, and concluding with a Glory Be and sometimes the Fatima Prayer.

Any of the sets of ten sequential braille characters with predictable patterns.

(electronics) A set of ten electronic devices used to represent digits.

(electronics) A set of resistors, capacitors, etc. connected so as to provide even increments between one and ten times a base electrical resistance.

The interval between any two quantities having a ratio of 10 to 1.

A group or division of ten; esp., a period of ten years; a decennium; as, a decade of years or days; a decade of soldiers; the second decade of Livy.

A period of 10 years

The cardinal number that is the sum of nine and one; the base of the decimal system