- A cut made in a tissue, e.g., with a scalpel, during surgical procedures. Microincisions are particularly small incisions performed with dedicated instruments.
- The medical term for the formation of a crust, scale or scab covering a wound.
- Intoxication refers to the stimulation, excitement or stupefaction of the organism produced by noxious chemical, physical or biological substances (toxins).
- The resulting condition of bodily dehydration due to insufficient intake of fluids is known as exsiccosis.
- Intravenous (from the Latin "intra" (inner, inside) and "vena" (vein)) refers, e.g., to the administration of a medication via a vein.
- Irrigation (from the Latin "irrigare" - to water) refers, e.g., to washing the intestines with an enema. This technique was originally used in stoma care, but has seen increasing use in fecal incontinence.