to stop up or block (a passage or opening)
to obstruct or hinder (something)
to take up and hold (e.g. a gas) by absorption or adsorption
said of teeth: to fit together with the cusps of the opposing teeth when the mouth is closed
to become occluded
occludent adj
occlusive /-siv/ adj
[Latin occludere, from oc- + claudere to shut, close]