Go to 'thermo-' entry Go to 'dino-' entry Go to 'chondro-' entry Go to 'aero-' entry Go to '-logy' entry Go to 'thaumato-' entry Go to 'nano-' entry Go to '-sophy' entry Go to 'bucco-' entry Go to '-ism' entry Go to '-lysis' entry Go to 'galacto-' entry Go to '-anthropy' entry Go to 'pneumo-' entry Go to '-ploitation' entry Go to '-lithic' entry Go to '-sepalous' entry Go to 'onco-' entry Go to '-parous' entry Go to 'dermato-' entry Go to 'multi-' entry Go to 'dodeca-' entry Go to '-zoon' entry Go to 'vermi-' entry Go to 'crystallo-' entry Go to 'biblio-' entry Go to 'eco-' entry Go to 'juxta-' entry Go to 'facio-' entry
Affixes: the building blocks of English
Affixes: the building blocks of English

dodec(a)-

Twelve.

[Greek dodeka, twelve.]

A dodecahedron (Greek hedra, seat, base) is a three-dimensional shape having twelve plane faces, while a dodecagon is a plane figure with twelve straight sides and angles. The Dodecanese is a group of twelve islands in the SE Aegean. The term dodecaphonic refers to a system of musical composition, also called the twelve-note or twelve-tone system.

In chemistry, dodecane is the straight chain (aliphatic) hydrocarbon C12H26; dodecyl (see -yl) relates to the radical C12H25—, as in dodecyl aldehyde, also called lauric aldehyde or dodecanal (see -al2), used in perfumery; dodecanoic acid (see -oic), or lauric acid, occurs in many vegetable fats and is used to make soaps and cosmetics.

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