allophane
/ˈaləfeɪn/Mineralogy
noun
An amorphous clay mineral, typically pale blue, consisting essentially of hydrated aluminium silicate.
Origin
Early 19th century; earliest use found in Annals of Philosophy. From allo- + -phane, after German Allophan, itself apparently after Byzantine Greek ἀλλοϕανής, the mineral being so named on account of its unusual appearance.
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- preen gland
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- preen-head
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- pre-established harmony
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- pre-European
- pre-evolutionary
- pre-evolutionist
- pre-examination
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- pre-excellence
- pre-excellent