Medical Terminology Chapter 4 Prefixes Medical Terminology Chapter 4
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.
Prefixes of Position Ante- antepartum, antecubital pre- preoperative pro- prootic epi epidermis, epidural, epinephrine
Prefixes of Position hypo- hypodermic, hypoallergenic infra- infrapubic sub- subcutaneous, submarine inter- intercostal, internet medi- medial, median meso- mesoderm
Prefixes of Position post- postnatal retro- retroperitoneal
Prefixes of Number and Measurement Bi- bilateral dipl- diplopia diplo diplococci hemi- hemiplegia semi- semicircular hyper- hyperglycemia macro- large
Prefixes of Number and Measurement Micro- microscope mono- mononuclear uni- unilateral multi- multipara
Prefixes of Number and Measurement Poly- polyphobia, polymer primi- primigravida quadri- quadriplegia tri- triceps
Prefixes of Negation A- asymptomatic an- anesthesia im- impotency in- insane, insensitive
Prefixes of Direction Ab- abnormal ad- adduction, addition circum- circumoral, circumference peri- periosteitis, perimeter ec- ectopia ex- excise
Prefixes of Direction Dia- diarrhea trans- transfusion ecto- ectoderm exo- exotropia extra- extraocular endo- endocardium intra- intradermal
Prefixes of Direction Para- paranasal super- supersensitive supra- suprarenal anti- antibacterial contra- contraception brady- slow dys- dyspepsia
End of Lesson four