apatite
noun
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How to pronounce apatite:

Definition of apatite:

apatite (noun):
calcium phosphate fluoride
a common complex mineral consisting of calcium fluoride phosphate or calcium chloride phosphate; a source of phosphorus.
any of a group of calcium phosphate minerals occurring in various colors as hexagonal crystals, as granular masses, or in fine-grained masses as the chief constituent of phosphate rock and of bones and teeth

Synonyms for apatite:

atomic number 15
atomic number 65
atomic number 69
fluorapatite
p
phosphorus
tb
terbium
thulium
tm