单词	hydroxyapatite
释义	hydroxyapatite /ˌhʌɪdrɒksɪˈapətʌɪt / noun [mass noun] A mineral related to apatite which is the main inorganic constituent of tooth enamel and bone, although it is rare in rocks.The most familiar apatite derivative is hydroxyapatite, the bulk mineral constituent of bone.... Bone consists of collagen banded fibrils sprinkled with tiny crystals of the mineral hydroxyapatite, which is basically calcium phosphate. A less popular ‘filler ‘for wrinkles is made from calcium hydroxyapatite, a substance used to replace missing bone.’
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