Index Finger. The fore finger.

Induration. The act of hardening.

Infection. The communication of virus.

Inferior. The lower of two parts.

Infusion. 1st. The steeping of a substance in a fluid; 2d. The liquor resulting from the steeping of a substance in a fluid.

Inguinal. Pertaining to the groin.

Inhalations. Gas or vapor to be inspired into the lungs.

Innominata. Nameless.

Inspiration. Breathing in; inhalation.

Intercostal. Between the ribs.