phosphoinositide

phos·pha·ti·dyl·in·o·si·tol (PtdIns),

(fos'fă-tī'dĭl-in-ō'si-tol), A phosphatidic acid combined with inositol found in biomembranes and a precursor to certain cellular signals. Sometimes referred to as inositide. Synonym(s): phosphoinositide