phosphopenia

phos·pho·pe·ni·a

(fos'fō-pē'nē-ă),
Low serum phosphate levels.
Synonym(s): phosphorpenia
[phospho- + G. penia, poverty]

phosphopenia

(fŏs″fō-pē′nē-ă) [″ + phorein, to carry, + penia, lack]
A deficiency of phosphorus in the body.