occlude
verb formal or technical
1. with object stop, close up, or obstruct (an opening, orifice, or passage):
｟かたく｠ 〈通路･毛穴など〉をふさぐ
e.g. thick makeup can occlude the pores.
shut (something) in:
…を閉め出す, 閉じ込める
e.g. they were occluding the waterfront with a wall of buildings.
cover (an eye) to prevent its use:
e.g. it is placed at eye level with one eye occluded.
2. no object (of a tooth) close on or come into contact with another tooth in the opposite jaw:
〘歯科〙 咬合（こうごう）する; 〈歯が〉よくかみ合う
e.g. in monkeys and apes, the upper canine occludes with the lower first premolar.
3. Chemistry (of a solid) absorb and retain (a gas or impurity):
〘化〙 〈個体が〉〈気体〉を吸蔵する
e.g. occluded within these crystals are other molecules.
ORIGIN
late 16th century: from Latin occludere ‘shut up’.