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 ]

a. [ L. occludens, p. pr. of occludere. ] Serving to close; shutting up. -- n. That which closes or shuts up. Sterne. [ 1913 Webster ]

a. [ L. occlusus, p. p. See Occlude. ] Shut; closed. [ Obs. ] Holder. [ 1913 Webster ]

n. [ See Occlude. ] 1. The act of occluding, or the state of being occluded. [ 1913 Webster ]

Constriction and occlusion of the orifice. Howell. [ 1913 Webster ]

2. (Med.) The transient approximation of the edges of a natural opening; imperforation. Dunglison. [ 1913 Webster ]

Occlusion of gases (Chem. & Physics), the phenomenon of absorbing gases, as exhibited by platinum, palladium, iron, or charcoal; thus, palladium absorbs, or occludes, nearly a thousand times its own volume of hydrogen, and in this case a chemical compound seems to be formed. [ 1913 Webster ]