One of the mysteries of the English language finally explained.
1Botany and Zoology. Having four serrations, teeth, or toothlike projections.
2Chemistry. Of a ligand: forming four separate bonds. Of a complex: formed by such a ligand.
Mid 18th century; earliest use found in James Lee (1715–1795), nurseryman. From post-classical Latin quadridentatus from classical Latin quadri- + dentātus.
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