OP stands for various terms. Discover the full forms, meanings, and possible interpretations of OP across different fields and industries.
The part of the throat that is at the back of the mouth, in contrast to the nasopharynx.
MedicalOtolaryngologySurgeryAn organophosphate (sometimes abbreviated OP) or phosphate ester is the general name for esters of phosphoric acid. Organophosphates are the basis of many insecticides, herbicides, and nerve agents. The United States Environmental Protection Agency lists organophosphates as very highly acutely toxic to bees, wildlife, and humans. Recent studies suggest a possible link to adverse effects in the neurobehavioral development of fetuses and children, even at very low levels of exposure.
ChemistryMedicalScientific & EducationalVeterinaryLast updated: