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Medical Prefixes
Prefixes found in medical terms
| Term | Definition | Examples |
|---|---|---|
| a-, an- | without or absence of | analgesic, anencephaly |
| ab- | from or away | abduction, abdomen |
| ad- | to or towards | adduction |
| ana- | up | anaplasia |
| ante- | before | antepartum |
| anti- | against | antibody, antipsychotic |
| append- | to hang something | appendix |
| bi-, bin- | two | binary vision |
| brady- | slow | bradycardia, bradyzoite |
| contra- | against; opposite | contralateral, contraceptive |
| di- | two | diplopia, dimer, diploid |
| dis- | to undo; free from | dissection, discharge, disinfectant |
| ecto-, exo-, extra- | outside | ectoblast, exoskeleton, extradural hematoma |
| endo- | within | endoskeleton, endoscopy, endometrium |
| epi- | upon | epithelium |
| erythr- | red | erthyrocyte |
| glyc- | sweet | glycemia, glycolysis |
| hyper- | above | hypertension, hypertrichosis |
| hypo- | below | hypovolemia, hypoxia |
| im- | not | imbalance, immobile |
| infra- | under; below | infracolic |
| inter- | between | interarticular ligament |
| intra- | inside | intracranial, intracellular |
| iso- | equal | isotonic |
| macro- | large | macrocephaly, macrocytosis |
| mal- | bad | malnutrition, malpractice |
| meso- | middle | mesoderm, mesometrium |
| meta- | after | metacarpal, metamorphosis |
| micro- | small | microscope, microangiopathy |
| mono- | one | monotherapy, monocular |
| multi- | many | multicellular |
| mut- | chance | mutation |
| neo- | new | neonatal, neoplasia |
| para- | beside | parathyroid, paranasal |
| patho- | disease | pathology |
| peri- | surrounding | periodontal |
| poly- | many | polyphagia |
| post- | after | postmortem |
| pre- | before | premature birth |
| pseudo- | false | pseudocyst, pseudoaneurysm |
| re- | back | relapse |
| retro- | back or behind | retropharyngeal, retroflexion |
| semi- | half | semiconscious |
| sub- | under or below | subcutaneous tissue |
| super- | over or above | superciliary |
| syn- | together or joined | synesthesia |
| tachy- | fast | tachycardia, tachypnea |
| tetra- | four | tetrameric, tetraplegia, tetrahydrocannabinol |
| trans- | through, across, beyond | transfusion |
| tri- | three | triceps, trisomy |
| ultra- | beyond; excess | ultrasound, ultraviolet |
| uni- | one | unilateral hearing loss, unilateral paralysis |