sep·ten·ni·al sep-ˈte-nē-əl. : occurring or being done every seven years. : consisting of or lasting for seven years. septennially.
decennial. adjective. de·cen·ni·al di-ˈsen-ē-əl. : consisting of 10 years. : happening every 10 years.
vicennial. / (vɪˈsɛnɪəl) / adjective. occurring every 20 years. relating to or lasting for a period of 20 years.
Most things "quadrennial" occur every four years (that's the more common use). We can say, for example, that the U.S. presidential election is a quadrennial event.
An event that occurs every seven years.
: happening every eighth year. : lasting for a period of eight years.
: happening every two years : biennial. The art show is a biannual event that won't happen again for two more years.
du·o·decennial. ¦d(y)ü(ˌ)ō+ : occurring once in 12 years.
What is a Jubilee? Jubilees mark a major milestone in the reign of a Monarch, celebrating their life and service. The naming of these celebrations follows the traditions of wedding anniversaries: 25 years is called a Silver Jubilee, 50 years a Golden Jubilee, 60 years a Diamond Jubilee, and 70 years a Platinum Jubilee.
quinceañera, (Spanish: “15 years [feminine form]”) also called quinceaños or quince años or simply quince, the celebration of a girl's 15th birthday, marking her passage from girlhood to womanhood; the term is also used for the celebrant herself.
A century is a period of 100 years. Centuries are numbered ordinally in English and many other languages. The word century comes from the Latin centum, meaning one hundred.
triennial. adjective. tri·en·ni·al (ˈ)trī-ˈen-ē-əl. : consisting of or lasting for three years. : occurring or being done every three years.
A period of 30 years is equal to 3 decades. Because, 10 years = 1 decade. 1 year = 1/10 decade. 30 years = 30/10 = 3 decades.
A person between 30 and 39 is called a tricenarian. A person between 40 and 49 is called a quadragenarian. A person between 50 and 59 is called a quinquagenarian. A person between 60 and 69 is called a sexagenarian.
consisting of or lasting 200 years: a bicentennial period.
A teenager, or teen, is someone who is 13 to 19 years old. They can also be described with the term "adolescence".
Preadolescence may also be defined as the period from 10 to 13 years. The point at which a child becomes an adolescent is defined by the major onset of puberty. However, in some individuals (particularly females), puberty begins in the preadolescence years.
Kids between 8 and 12 are called “tweens” because they are in between children and teenagers.
silver jubilee: 25th anniversary. golden jubilee: 50th anniversary.
quinquennial noun. quinquennially. kwin-ˈkwe-nē-ə-lē
Sexennial, seks-en′yal, adj. lasting six years: happening once in six years—also Sextenn′ial.
'Biannual' means twice a year. 'Biennial' means every 2 years.
1. : one half of a year (as January to June or July to December) : one of two academic terms : semester.
While semiannual is an adjective that describes something that happens twice in a single year, biennial is a word that describes something that happens every other year.