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The Collaborative International Dictionary of English v.0.48 (gcide)

Phosphoric \Phos*phor"ic\, a. [Cf. F. phosphorique.]
1. (Chem.) Of or pertaining to phosphorus; resembling, or
containing, phosporus; specifically, designating those
compounds in which phosphorus has a higher valence as
contrasted with the {phosphorous} compounds.
[1913 Webster]

2. Phosphorescent. "A phosphoric sea." --Byron.
[1913 Webster]

{Glacial phosphoric acid}. (Chem.)
(a) Metaphosphoric acid in the form of glassy
semitransparent masses or sticks.
(b) Pure normal phosphoric acid.

{Phosphoric acid} (Chem.), a white crystalline substance,
{H3PO4}, which is the most highly oxidized acid of
phosphorus, and forms an important and extensive series of
compounds, viz., the phosphates.

{Soluble phosphoric acid}, {Insoluble phosphoric acid}
(Agric. Chem.), phosphoric acid combined in acid salts, or
in neutral or basic salts, which are respectively soluble
and insoluble in water or in plant juices.

{Reverted phosphoric acid} (Agric. Chem.), phosphoric acid
changed from acid (soluble) salts back to neutral or basic
(insoluble) salts.
[1913 Webster]

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