About Normal Pressure Hydrocephalus. Normal pressure hydrocephalus occurs when excess cerebrospinal fluid accumulates in the brain's ventricles, which are hollow fluid-filled chambers. NPH is called normal pressure because despite the excess fluid, cerebrospinal fluid pressure as measured during a spinal tap is often normal.
â¢ ART DECO (noun). The noun ART DECO has 1 sense: 1. a style of design that was popular in the 1920s and 1930s; marked by stylized forms and geometric designs adapted to mass production. Familiarity information: ART DECO used as a noun is very rare. ART DECO (noun). The noun ART DECO has 1 sense: 1. a style of design that was popular in the 1920s and 1930s; marked by stylized forms and geometric designs adapted to mass production. Familiarity information: ART DECO used as a noun is very rare.
In colloquial use, the term code is often used to mean any method of encryption or concealment of meaning. However, in cryptography, code has a more specific meaning. It means the replacement of a unit of plaintext (i.e., a meaningful word or phrase) with a code word (for example, wallaby replaces attack at dawn).