Artificial intelligent assistant

occludent

occludent, a. and n.
  (əˈkluːdənt)
  [ad. L. occlūdent-em, pr. pple. of occlūd-ĕre to occlude.]
  a. adj. Having the property or function of occluding. b. n. Something having this property.

1762 Sterne Tr. Shandy V. xl, The radical heat and moisture..may be preserved..by consubstantials, impriments, and occludents. [Bacon Hist. Vitæ & Mortis Canon xxvi, Per Consubstantialia, Imprimentia, & Occludentia.] 1864 Webster, Occludent, serving to close, shutting up. 1877 Huxley Anat. Inv. Anim. vi. 299 On the inner side of the occludent margin of its scutum.

Oxford English Dictionary

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