Four Word Parts Word Roots Suffix Prefix Combining Vowel

Word Root Contains the core of the word; functional meaning Ex.: play/er play is word root arthr/itis arthr is word root hepat/itis hepat is word root

Suffix A word part attached to the end of a word root to modify meaning Ex.: play/er er is suffix hepat/ic ic is the suffix hepat/itis itis is the suffix Not all medical terms have a suffix

Prefix Word part attached to the beginning of the word root to modify it’s meaning. Ex.: re/play re is the prefix sub/hepat/ic sub is the prefix Not all medical terms have a prefix

Combining Vowel Word part, usually an o used between two word roots OR between a word root and a suffix to ease pronunciation. The combining vowel is not used between a prefix and a word root. Ex.: therm/o/meter arthr/o/pathy

Combining Vowel Guideline #1 When connecting a word root and suffix; a combining vowel is not usually used. Even if vowels are present at the junction. Ex.: hepat/ic Suffix begins with I; no combining vowel is used

Combining Vowel Guideline #2 When conntecting two word roots; combining vowel is usually used even if vowels are present at the junction. Ex.: oste/o/arthr/itis O is the combining vowel, even though oste ends with an e and word root arthr begins with an a Combining vowels ease pronunciation; therefore, not all terms have combining vowels

Combining Form A word root with the combining vowel attached, seperated by a diagonal line. Ex.: arthr/o oste/ ven/o Combining form is NOT a word part; it is a presentation of two word parts

Analyzing and Defining Medical Terms To analyze medical terms, divide the medical terms into word parts, label each word part, and label the combining forms. Osteo/o/arthr/o/pathy 1. separate by slashes 2. label with abbreviations 3. label combining forms

Student Practice Analyze the following medical term: Osteopathy Arthritis Hepatitis Subhepatic Intravenous Arthropathy Osteitis

Hints! Read the meaning from the suffix back to the first part of the word. Sub/hepat/ic Drop the combining vowel before a suffix beginning with a vowel Gastric not gastroic Retain the combining vowel between two roots in a word Oste/o/arthr/o/pathy

Hints! Spelling… Many words are pronounced alike but spelled differently AND have different meanings Ileum part of the small intestine Ilium part of the pelvis, or hip bone

Hints! Pronunciation… Words spelled correctly but pronounced incorrectly may be misunderstood Urethra urinary tract tube leading from the urinary bladder to the external surface Ureter one of two tubes leading from the kidney to the urinary bladder