Understanding Prefixes
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MEDICAL TERMINOLOGYMEDICAL TERMINOLOGY
CompleteComplete!!
CHAPTER
Second EditionSecond Edition
Understanding Prefixes
3
Medical Terminology: Complete!, Second EditionBruce Wingerd
Learning Objectives
• Define and spell the prefixes commonly used in medical terminology.
• Identify prefixes in medical terms.
• Use prefixes to build medical terms.
Medical Terminology: Complete!, Second EditionBruce Wingerd
Common Prefixes
• a- • ab- • bi- • endo- • hyper-• hypo-
Medical Terminology: Complete!, Second EditionBruce Wingerd
Common Prefixes (cont.)
• intra- • post- • pre- • sub-
Medical Terminology: Complete!, Second EditionBruce Wingerd
Common Prefixes (cont.)
• anti- • con- • contra-• meta-
anti-
-ic
= against
= pertaining to
bi/o= life
antibiotic
Medical Terminology: Complete!, Second EditionBruce Wingerd
Prefixes That Indicate Number or Quantity
• ambi- • bi-• di-, dipl- • hemi- • mono-
Medical Terminology: Complete!, Second EditionBruce Wingerd
Diplopia (double vision)Source: Alex Melnick / Shutterstock.com
Medical Terminology: Complete!, Second EditionBruce Wingerd
Prefixes That Indicate Number or Quantity (cont.)
• multi- • nulli- • pan- • poly-
poly-
-itis
= many
= inflammation
arter/o= artery
polyarteritis
Medical Terminology: Complete!, Second EditionBruce Wingerd
Prefixes That Indicate Number or Quantity (cont.)
• primi- • quadri- • semi- • tetra- • tri- • uni-
Medical Terminology: Complete!, Second EditionBruce Wingerd
Prefixes That Indicate Location or Timing
• ab- • ad- • ana-• ante-
Medical Terminology: Complete!, Second EditionBruce Wingerd
Prefixes That Indicate Location or Timing (cont.)
• dia- • dis- • ec-, ecto- • endo-
Medical Terminology: Complete!, Second EditionBruce Wingerd
Figure 3.1 Endogastric procedure using an endoscope to observe the internal stomach
lining.
Medical Terminology: Complete!, Second EditionBruce Wingerd
Prefixes That Indicate Location or Timing (cont.)
• ep-, epi- • eso- • ex-, exo- • extra-
Medical Terminology: Complete!, Second EditionBruce Wingerd
Prefixes That Indicate Location or Timing (cont.)
• hypo-• infer- • inter- • intra- • para-
Medical Terminology: Complete!, Second EditionBruce Wingerd
Prefixes That Indicate Location or Timing (cont.)
• peri- • post-• pre-• sub- • super-, supra- • sym-, syn-
Medical Terminology: Complete!, Second EditionBruce Wingerd
Figure 3.2 Skin Layers
Medical Terminology: Complete!, Second EditionBruce Wingerd
Prefixes That Indicate a Specific Quality about a Term
• a-, an-• brady- • circum- • dys- • eu- • heter-, hetero-
Medical Terminology: Complete!, Second EditionBruce Wingerd
Prefixes That Indicate a Specific Quality about a Term
(cont.)• hyper- • hypo- • macro- • mal- • mega-, megalo-
Medical Terminology: Complete!, Second EditionBruce Wingerd
Prefixes That Indicate a Specific Quality about a Term
(cont.) • micro- • neo- • pseudo- • tachy- • trans- • ultra-
tachy-
-ia
= rapid
= condition of
cardi/o= heart
tachycardia
Medical Terminology: Complete!, Second EditionBruce Wingerd
Figure 3.3 Ultrasound imaging. Source: Photodisc/Thinkstock
Medical Terminology: Complete!, Second EditionBruce Wingerd
Prefix Quiz
1.peri- a. through2.ante- b. around3.dis- c. apart4.dia- d. alongside5.para- e. before