From The Collaborative International Dictionary of English v.0.48 [gcide]:
Occlude \Oc*clude"\, v. t. [L. occludere, occlusum; ob (see
Ob-) + claudere to shut.]
1. To shut up; to close. --Sir T. Browne.
[1913 Webster]
2. (Chem.) To take in and retain; to absorb; -- said
especially with respect to gases; as, iron, platinum, and
palladium occlude large volumes of hydrogen.
[1913 Webster]
From WordNet (r) 3.0 (2006) [wn]:
occlude
v 1: block passage through; "obstruct the path" [syn:
obstruct, obturate, impede, occlude, jam,
block, close up] [ant: disengage, free]
From The Free On-line Dictionary of Computing (8 July 2008) [foldoc]:
occlude
<programming> (Or "shadow") To make a variable inaccessible by
declaring another with the same name within the scope of the
first.
(1995-12-14)