-olol, suffixPharm.|əlɒl|[Shortened form of propranolol n.]Used in the names of beta-adrenoceptor blocking drugs derived from propranolol or having a similar molecular structure.1973Approved Names (Brit. Pharmacopœia Comm.) 83 If the following syllables are used, they should be restricted to the groups indicated..-olol for beta adrenergic receptor blocking agents derived from 1-oxy-3-aminopropan-2-ol.