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

thio-

Sulphur

[Greek theion, sulphur.]

The form is used in chemistry to indicate the replacement of oxygen in a molecule by sulphur: a thiosulphate (US thiosulfate) is a salt containing the anion S2O32-, equivalent to a sulphate with one oxygen atom replaced by sulphur; thiourea is the sulphur analogue of urea, SC(NH2)2, used in photography and in making synthetic resins; a thiocyanate is a salt containing the anion SCN-; the adjective thionyl denotes the divalent radical ==SO.

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