Glossary I

Intolerance is an unwillingness to accept other people or groups who are different from one's own. When we are intolerant we may want to get rid of the other person, group or idea, or we may just treat them as if they were less valuable or less important than we are. Racial discrimination and prejudice are forms of intolerance.
Intonation is defined as the use of pitch to signal meaning; use of pitches of varying levels to help communicate meaning.
Intonational contour refers to a pattern of pitch changes characteristic of an utterance as a whole, such as the rising intonation often found in questions.

Intoxication is defined as a transient state of physical and psychological disruption caused by the presence of a toxic substance, such as alcohol, in the CNS.

Intracavernous injection is defined as a treatment method for erectile dysfunction in which vasodilating drugs are injected into the penis for the purpose of creating an erection.

Intracellular thirst refers to thirst triggered when fluid is drawn out of cells due to an increased concentration of salts and minerals outside the cell.
Intracerebral means "within the cerebrum " or brain.
Intracerebral fibers refer to fibers that connect regions within one hemisphere.