Medical Terminology: Suffixes – Structure, Meaning, and Application

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Concept: Suffixes in Medical Terminology

Introduction to Suffixes

Suffixes are word parts added to the end of a medical term to modify its meaning. Understanding suffixes is essential for interpreting and constructing medical vocabulary. Suffixes can indicate general use, grammatical function, pathological conditions, or diagnostic and surgical procedures.

General Use: Common terms likely to be encountered in medical contexts.
Grammatical: Convert a word root into a noun, adjective, or diminutive form.
Pathological Conditions: Indicate diseases, symptoms, or abnormal states.
Diagnostic & Surgical Procedures: Describe procedures such as incisions, measurements, or visual examinations.

Example: -tomy = incision (as in gastrotomy)

General Use Suffixes

Common Suffixes and Their Functions

These suffixes are frequently used to form medical terms related to actions, body components, or specialties/treatments.

Suffix	Definition	Example/Memory Tool
-algia	Pain	gastralgia
-drome	Symptoms occurring together	syndrome
-cyte	Cell	leukocyte
-gen, -genesis	To form or produce	embryogenesis
-oid	Resembling	lymphoid
-blast	Immature cell	hepatoblast
-lysis	Destruction, breakdown	hemolysis
-logy	Study of	psychology
-therapy	Treatment	psychotherapy
-thermy	Heat	antithermy

Example: The medical term for an immature kidney cell is nephroblast.

Grammatical Suffixes

Noun Suffixes

Noun suffixes can mean condition, specialist, specialty, etc.

Suffix	Example
-ia	hemophilia
-ist	psychiatrist
-ism	alcoholism
-y	cardiology

Adjective Suffixes

Suffixes that mean 'pertaining to.'

Suffix	Example
-ac, -al, -ar, -ary, -ic, -ous, -tic	Cardiac, congenital, muscular, pulmonary, septic, lymphatic, infective

Diminutive Suffixes

Suffixes that mean 'small' or 'minute.'

Suffix	Example
-icle, -ole, -ule	Ventricle, bronchiole, arteriole

Example: Identify the type of grammatical suffix in medical words (e.g., N for noun, A for adjective, D for diminutive).

Pathological Conditions: Standalone Terms

Common Suffixes for Pathological Conditions

Some suffixes can be medical terms on their own, indicating specific pathological conditions.

Suffix	Definition	Example/Memory Tool
-mania	Madness	Pyromania
-phobia	Fear	Trypophobia
-edema	Swelling	Lymphedema
-emesis	Vomiting	Hyperemesis
-sthenia	Strength	Myasthenia

Example: The medical term for vomiting blood is hematemesis.

Pathological Conditions: Other Suffixes

Suffixes Requiring a Word Root or Prefix

Suffix	Definition	Example/Memory Tool
-algia	Pain	Dentalgia
-itis	Inflammation	Arthritis
-lepsy	Seizure	Epilepsy
-megaly	Enlargement	Hepatomegaly
-oma	Tumor	Carcinoma
-pathy	Disease	Nephropathy
-penia	Deficiency	Osteopenia

Additional Pathological Suffixes

Suffix	Definition	Example/Memory Tool
-phasia	Speech	Aphasia
-plegia	Paralysis, stroke	Hemiplegia
-rrhage	Bursting	Hemorrhage
-rrhea	Flow	Diarrhea
-rrhexis	Rupture	Hysterorrhexis

Example: Match suffixes to their meanings (e.g., -itis = inflammation, -penia = deficiency).

Diagnostic & Surgical Procedures

Suffixes for Diagnostic Procedures

Suffix	Definition	Example/Memory Tool
-graph	Recording instrument	Polygraph
-graphy	Recording technique	Angiography
-meter	Measuring instrument	Spirometer
-metry	Measuring technique	Oximetry
-scope	Examination instrument	Microscope
-scopy	Examination technique	Endoscopy

Suffixes for Surgical Procedures

Suffix	Definition	Example/Memory Tool
-ectomy	Surgical removal	Gastrectomy
-stomy	Forming an opening	Colostomy
-tomy	Incision	Gastrotomy
-centesis	Puncture to drain fluid	Amniocentesis
-desis	Binding or joining	Arthrodesis
-pexy	Fixation	Orchiopexy

Example: The medical term for the device used for visual examination of the ear is otoscope.

Application and Practice

Sample Questions and Clinical Applications

Write the medical term for a medical specialization that studies treatment of conditions related to the digestive system: Gastroenterology.
Procedure to drain excess fluid from the pericardium: Pericardiocentesis.
Medical term for a condition with chronic muscle pain as the main symptom: Myalgia.
Medical term for a tumor consisting of both fat and smooth muscle cells: Lipoleiomyoma.

Additional info: Suffixes are foundational in medical terminology, allowing healthcare professionals to communicate precisely about conditions, procedures, and anatomy. Mastery of suffixes enhances comprehension and accuracy in clinical settings.