Something that is octennial occurs every eight years. Octennial can also mean something having to do with eight years. Oct means eight (like octopus, octogon) and enial means years (centenial, perenial)
The common root "octo" refers to the number 8. Words such as octopus (eight arms), octagon (eight sides), and octennial (every eight years) share this root.
A period of eight years is commonly referred to as an "octade" or "octennial." The prefix "octa-" signifies eight, deriving from Greek. While not as commonly used in everyday language, these terms can be found in specific contexts, such as in history or planning.
Biennial:Occurring every two years. The Legislature meets biennially. NOTE: Biannual means "occurring twice a year."www.leg.state.or.us/glossary.htmlPlant that completes its life cycle in two years and generally flowers in the second yearnaturesnaturals.co.uk/Botanicals+Glossary
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern -C---NIA-. That is, nine letter words with 2nd letter C and 6th letter N and 7th letter I and 8th letter A. In alphabetical order, they are: octennial
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 2 words with the pattern O---NN---. That is, nine letter words with 1st letter O and 5th letter N and 6th letter N. In alphabetical order, they are: octennial oftenness
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 6 words with the pattern --T--N-A-. That is, nine letter words with 3rd letter T and 6th letter N and 8th letter A. In alphabetical order, they are: asthenias chthonian octennial outlinear pottingar tithonias
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern -CT-N---L. That is, nine letter words with 2nd letter C and 3rd letter T and 5th letter N and 9th letter L. In alphabetical order, they are: octennial
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 9 words with the pattern --T-N---L. That is, nine letter words with 3rd letter T and 5th letter N and 9th letter L. In alphabetical order, they are: antenatal antinodal antinovel botanical octennial potential satanical tetanical untuneful
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 7 words with the pattern ----NNI-L. That is, nine letter words with 5th letter N and 6th letter N and 7th letter I and 9th letter L. In alphabetical order, they are: decennial novennial octennial perennial sexennial triennial vicennial
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 23 words with the pattern ---ENN---. That is, nine letter words with 4th letter E and 5th letter N and 6th letter N. In alphabetical order, they are: alienness antennary antennule decennary decennial decennium empennage givenness greenness impennate novennial octennial oftenness perennate perennial perennity sexennial triennial triennium unkennels unpennied unpenning vicennial
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 26 words with the pattern ---E--I-L. That is, nine letter words with 4th letter E and 7th letter I and 9th letter L. In alphabetical order, they are: adverbial agrestial aspergill cadential celestial decennial demential essential fiberfill forestial funebrial intertill novennial obsequial octennial papergirl perennial petechial potential salesgirl sciential sexennial synedrial triennial underkill vicennial
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 29 words with the pattern ---EN--A-. That is, nine letter words with 4th letter E and 5th letter N and 8th letter A. In alphabetical order, they are: accentual antenatal arsenical cadential decennial demential dementias dicentras eirenical essential eugenical galenical greenhead hymenaeal hymenaean novennial oakenshaw octennial perennial phaenogam potential sciential serenatas sexennial steenbras triennial valencias vicennial wapenshaw