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Simplifying Medical Terminology Basics

May 25, 2025

Medical Terminology Made Easy

Introduction

  • Purpose: Simplify understanding of medical terminology.
  • Structure of Medical Terms:
    • Prefix: Describes characteristics (location, direction, number, quantity, size, color).
    • Root: Core meaning, often related to body part or system.
    • Suffix: Describes disease, condition, procedure, or test.

Example Breakdown

  • Hyperthyroidism:
    • Hyper: Above normal, excess.
    • Thyroid: Thyroid gland.
    • Ism: Condition.
    • Meaning: Overactive thyroid gland producing too much hormone.

Common Prefixes

Quantity

  • Mono: One (e.g., monocle).
  • Uni: One (e.g., unicycle).
  • Bi/Di/Diplo: Two (e.g., bicycle, biceps).
  • Tri: Three (e.g., tricycle, triceps).
  • Quadri: Four (e.g., quadrilateral, quadriceps).
  • Semi/Hemi: Half (e.g., semicolon).
  • Equa/Iso: Equal (e.g., equilateral triangle).
  • Eu/Normo: Normal (e.g., euglycemic, normotensive).

Amounts and Sizes

  • Hyper: Above normal, excess (e.g., hyperactive).
  • Hypo: Below normal (e.g., hypoglycemia).
  • A/An: Absent, lacking (e.g., anoxia).
  • Pan/Omni: All (e.g., pancytopenia).
  • Multi/Poly: Many (e.g., polygon).
  • Micro: Small (e.g., microscope).
  • Macro/Megalo: Large (e.g., megalo = mega).
  • Oligo: Few, very little.

Color

  • Chromo/Chromato: Color (e.g., chromosome).
  • Alb: Pale/white (e.g., albino).
  • Chloro: Green (e.g., chlorophyll).
  • Cyano: Blue (e.g., cyanosis).
  • Erythro: Red (e.g., erythrocytes).
  • Glauco: Opaque/gray.
  • Leuko: White (e.g., leukocytes).
  • Melano: Black (e.g., melanoma).
  • Polio: Gray.
  • Porphyr: Purple.
  • Rodo: Rose/red.
  • Xantho: Yellow (e.g., xanthochromia).

Time and Speed

  • Pre: Before (e.g., pre-operative).
  • Post: After (e.g., post-operative).
  • Pro/Ante: Before (e.g., antepartum).
  • Re: Again (e.g., repeat).
  • Retro: Backward (e.g., retro fashion).
  • Neo: New (e.g., neonatal).
  • Chrono: Time (e.g., chronological).
  • Tachy: Fast (e.g., tachycardia).
  • Brady: Slow (e.g., bradycardia).

Location or Position

Above/Below

  • Epi/Hyper/Supra/Super: Above.
  • Sub/Hypo/Infra: Below.

Left/Right

  • Dextro: Right.
  • Levo/Sinistro: Left.

Front/Back

  • Anti/Antero/Ventri: Front (e.g., ventriloquist).
  • Postero/Dorsi: Back (e.g., dorsal fin).

Around/Between

  • Peri/Circum: Around.
  • Endo/Intra/Intro: Inside.
  • Exo/Extra/Ecto: Outside.
  • Ab: Away from.
  • Ad: Toward.
  • Trans: Through/across.

Middle/Lateral

  • Meso/Meta/Medio: Middle (e.g., mesoderm).
  • Lateral: Lateral.
  • Para: Nearby.
  • Juxta: Next to.
  • Inter: Between.

Both/Same/Opposite

  • Ambi/Amphi: Both sides (e.g., ambidextrous).
  • Ipsi: Same.
  • Contra: Against.

Conclusion

  • Understanding prefixes helps in deciphering medical terms.
  • Future videos will cover roots and suffixes.
  • Resources available on the website linked in the description.