<computer programming> (Or "shadow") To make a variable inaccessible by declaring another with the same name within the scope of the first.

(01 Mar 1995)

1. To shut up; to close.

2. <chemistry> To take in and retain; to absorb; said especially with respect to gases; as iron, platinum, and palladium occlude large volumes of hydrogen.

Origin: L. Occludere, occlusum; ob (see Ob-) + claudere to shut.

(01 Mar 1998)