Prefixes

1. Prefixes Medical Terminology Chapter 4

2. Student Objectives • Explain the use of prefixes in medical terminology. • Explain how a prefix changes the meaning of a word. • Identify prefixes of position, number, and measurement, negation, and direction.

3. Prefixes of Position • Ante- antepartum, antecubital • pre- preoperative • pro- prootic • epi epidermis, epidural, epinephrine

4. Prefixes of Position • hypo- hypodermic, hypoallergenic • infra- infrapubic • sub- subcutaneous, submarine • inter- intercostal, internet • medi- medial, median • meso- mesoderm

5. Prefixes of Position • post- postnatal • retro- retroperitoneal

6. Prefixes of Number and Measurement • Bi- bilateral • dipl- diplopia • diplo diplococci • hemi- hemiplegia • semi- semicircular • hyper- hyperglycemia • macro- large

7. Prefixes of Number and Measurement • Micro- microscope • mono- mononuclear • uni- unilateral • multi- multipara

8. Prefixes of Number and Measurement • Poly- polyphobia, polymer • primi- primigravida • quadri- quadriplegia • tri- triceps

9. Prefixes of Negation • A- asymptomatic • an- anesthesia • im- impotency • in- insane, insensitive

10. Prefixes of Direction • Ab- abnormal • ad- adduction, addition • circum- circumoral, circumference • peri- periosteitis, perimeter • ec- ectopia • ex- excise

11. Prefixes of Direction • Dia- diarrhea • trans- transfusion • ecto- ectoderm • exo- exotropia • extra- extraocular • endo- endocardium • intra- intradermal

12. Prefixes of Direction • Para- paranasal • super- supersensitive • supra- suprarenal • anti- antibacterial • contra- contraception • brady- slow • dys- dyspepsia

13. Prefixes of Direction • Eu- eupnea • hetero- different • homo- homosexual • mal- malnutrition • pan- panhysterectomy, panacea • pseudo- pseudoplegia • syn- synarthrosis, synthesis • tachy- tachypnea

14. End of Lesson four