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

eth-

A two-carbon chain of atoms.

[English ether (Greek aithēr, upper air, because the ether was believed to occupy all space beyond the sphere of the moon).]

This form is used to represent the ethyl radical, a chain of two carbon atoms (ether is the common name for diethyl ether, which contains two such chains separated by an oxygen atom); this appears in a few names of organic compounds, such as ethene, ethyne, ethambutol (a synthetic compound used to treat tuberculosis), and ethacrynic acid, a powerful diuretic drug. See also ethoxy-.

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