Chemistry-based term that refers to an organic phosphate where the phosphate is attached on the ortho position in a benzene ring.

a salt of phosphoric acid

A simple compound of phosphorous and oxygen that is soluble in water.

1. A salt that contains phosphorus as PO43-. 2. A product of the hydrolysis of condensed (polymeric) phosphates, i.e., the most hydrated or reverted ("broken down") and stable form of phosphate compounds. Orthophosphates cannot sequester metal ions and hardness, but they can form passivating films on anodic sites to suppress electrochemical corrosion reactions in metallic plumbing. 3. A nutrient required for plant and animal growth.