We found 1 definitions of atomic number 15 from 1 different sources.
Noun |
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atomic number 15 - a multivalent nonmetallic element of the nitrogen family that occurs commonly in inorganic phosphate rocks and as organic phosphates in all living cells; is highly reactive and occurs in several allotropic forms | ||
phosphorus, P | ||
chemical element, element the most favorable environment for a plant or animal; "water is the element of fishes" | ||
apatite a common complex mineral consisting of calcium fluoride phosphate or calcium chloride phosphate; a source of phosphorus |