0.3 Medical Terminology for Central Service
Key Takeaways
- Medical terms are built from three components: prefix (beginning), root word (core meaning), and suffix (ending)
- Common prefixes in CS: anti- (against), bio- (life), micro- (small), sterile- (free from organisms), de- (removal)
- Common suffixes: -cide (killing), -stasis (stopping), -ectomy (surgical removal), -scope (viewing instrument), -plasty (surgical repair)
- Understanding instrument naming conventions helps identify function: -stat (holding), -tome (cutting), -clamp (compressing)
- Anatomical directional terms (anterior, posterior, lateral, medial, proximal, distal) describe instrument placement and surgical site location
- Abbreviations commonly used in CS include IFU (Instructions for Use), BI (Biological Indicator), CI (Chemical Indicator), PPE (Personal Protective Equipment)
- The root word determines the body system or structure being referenced
- Knowing terminology improves communication with OR staff, surgeons, and other healthcare professionals
Last updated: March 2026
Medical Terminology for Central Service
Effective communication in the healthcare environment requires understanding medical terminology. Central Service technicians must recognize instrument names, anatomical references, and standard abbreviations to process instruments correctly and communicate with surgical teams.
Building Medical Terms
Medical terms are constructed from three components:
| Component | Position | Function | Example |
|---|---|---|---|
| Prefix | Beginning | Modifies the meaning | anti- (against), micro- (small) |
| Root word | Middle | Core meaning | cardi (heart), derm (skin) |
| Suffix | End | Indicates condition/procedure | -ectomy (removal), -scope (viewing) |
Common Prefixes in Central Service
| Prefix | Meaning | Example |
|---|---|---|
| anti- | Against | Antimicrobial |
| bio- | Life, living | Bioburden, biofilm |
| de- | Removal, reversal | Decontamination |
| dis- | Apart, absence | Disinfection |
| endo- | Within | Endoscope |
| hemo- / hemato- | Blood | Hemostasis, hemostat |
| micro- | Small | Microorganism |
| peri- | Around | Perioperative |
| poly- | Many | Polypropylene (wrapping material) |
| stereo- | Three-dimensional | Stereo microscope |
| sub- | Under, below | Subcutaneous |
Common Suffixes in Central Service
| Suffix | Meaning | Example |
|---|---|---|
| -cide | Killing | Germicide, bactericide |
| -clamp | Compressing device | Hemostatic clamp |
| -ectomy | Surgical removal | Appendectomy |
| -gram | Record/image | Electrocardiogram |
| -itis | Inflammation | Endocarditis |
| -lysis | Destruction/breakdown | Hemolysis |
| -oscopy | Visual examination | Laparoscopy |
| -osis | Abnormal condition | Necrosis |
| -otomy | Cutting into | Laparotomy |
| -plasty | Surgical repair | Arthroplasty |
| -scope | Viewing instrument | Arthroscope |
| -stasis | Stopping/controlling | Hemostasis |
| -stat | Device that stops | Hemostat |
| -tome | Cutting instrument | Dermatome |
Instrument Naming Conventions
Surgical instruments are often named by:
- Function: What the instrument does (clamp, retractor, scissors, forceps)
- Inventor/Designer: Who designed it (Mayo, Metzenbaum, DeBakey, Allis)
- Anatomical use: Where it is used (tonsil, uterine, rectal)
- Physical characteristics: Appearance (curved, straight, serrated, toothed)
Examples:
- Mayo scissors — Named after the Mayo Clinic; heavy scissors for cutting tough tissue
- Metzenbaum scissors — Named after Dr. Metzenbaum; delicate dissecting scissors
- Kelly clamp — Named after Howard Kelly; a hemostatic clamp
- Deaver retractor — Named after John Deaver; a large abdominal retractor
Anatomical Directional Terms
| Term | Meaning | Opposite |
|---|---|---|
| Anterior | Front of the body | Posterior |
| Posterior | Back of the body | Anterior |
| Superior | Above / toward the head | Inferior |
| Inferior | Below / toward the feet | Superior |
| Medial | Toward the midline | Lateral |
| Lateral | Away from the midline | Medial |
| Proximal | Closer to the point of origin | Distal |
| Distal | Farther from the point of origin | Proximal |
| Superficial | Near the surface | Deep |
| Deep | Away from the surface | Superficial |
Essential CS Abbreviations
| Abbreviation | Meaning |
|---|---|
| AAMI | Association for the Advancement of Medical Instrumentation |
| AORN | Association of periOperative Registered Nurses |
| BI | Biological Indicator |
| CI | Chemical Indicator |
| CS | Central Service |
| EtO | Ethylene Oxide |
| HEPA | High-Efficiency Particulate Air |
| HLD | High-Level Disinfection |
| HSPA | Healthcare Sterile Processing Association |
| IFU | Instructions for Use (manufacturer) |
| IUSS | Immediate-Use Steam Sterilization |
| OSHA | Occupational Safety and Health Administration |
| PCD | Process Challenge Device |
| PPE | Personal Protective Equipment |
| SDS | Safety Data Sheet |
| SPD | Sterile Processing Department |
| TJC | The Joint Commission |
Test Your Knowledge
The suffix "-cide" means:
A
B
C
D
Test Your Knowledge
Which abbreviation refers to the manufacturer's document that tells CS technicians exactly how to clean, disinfect, and sterilize a device?
A
B
C
D