MOI
Abbreviation with 2 meanings
| Stands for | Mechanism of injury |
|---|---|
| Meanings | 2 |
| Categories | Medical, Science & Engineering |
MOI has two meanings. It stands for Mechanism of injury (emergency medicine) or Multiplicity of infection (biology).
Meanings of MOI at a glance
| # | MOI stands for | Context |
|---|---|---|
| 1 | Mechanism of injury | Medical › Emergency Medicine |
| 2 | Multiplicity of infection | Science & Engineering › Biology |
1. Mechanism of injury
Medical · Emergency Medicine Abbreviations
Description of how an injury occurred, including forces, speed, height of fall and objects involved. It helps predict hidden injuries and guides trauma triage.
Example: MOI: fall from 15-foot ladder onto concrete, landed on feet.
Significant mechanisms, such as ejection from a vehicle or falls over 20 feet in adults, are part of field triage guidelines. EMS crews report MOI to the receiving hospital. NOI, nature of illness, is the medical counterpart.
2. Multiplicity of infection
Science & Engineering · Biology Abbreviations
Ratio of infectious virus particles (or bacteria) to target cells in an infection experiment. At an MOI of 1, there is on average one infectious particle per cell, though Poisson statistics mean some cells receive none and others several.
Example: Cells were infected at an MOI of 0.1 and harvested 48 hours later.
An MOI of about 3 infects roughly 95% of cells, which is why high MOIs are used for synchronous one-step growth experiments. Gene therapy and CAR-T manufacturing also specify viral vector doses as MOI.
Related abbreviations
More emergency medicine abbreviations
- LWBS – Left without being seen
- MARCH – Massive hemorrhage, airway, respiration, circulation, hypothermia
- MCC – Motorcycle crash
- MCI – Mass-casualty incident
- MOLST – Medical Orders for Life-Sustaining Treatment
- MOST – Medical Orders for Scope of Treatment
- MSE – Medical screening examination
- MTP – Massive transfusion protocol
See all 97 emergency medicine abbreviations →
More biology abbreviations
- LUCA – Last universal common ancestor
- mAb – Monoclonal antibody
- MHC – Major histocompatibility complex
- MIC – Minimum inhibitory concentration
- MRCA – Most recent common ancestor
- mRNA – Messenger RNA
- NAD – Nicotinamide adenine dinucleotide
- NADH – Nicotinamide adenine dinucleotide (reduced)
See all 75 biology abbreviations →
This entry is for general education and is not medical advice. Abbreviation use varies between institutions; always confirm in context.