Lesson of the day:

denucleate (third-person singular simple present denucleates, present participle denucleating, simple past and past participle denucleated)

To remove the nucleus

defuse (third-person singular simple present defuses, present participle defusing, simple past and past participle defused)

(transitive) To remove the fuse from (a bomb, etc.).
(transitive, figuratively) To make less dangerous, tense, or hostile.

to defuse a hostage situation

(computing, Internet) Any computer attached to a network.

(ecology) A cell or organism which harbors another organism or biological entity, usually a parasite.

Viruses depend on the host that they infect in order to be able to reproduce.

(evolution, genetics) An organism bearing certain genetic material.

The so-called junk DNA is known, so far, to provide no apparent benefit to its host.

(plural mediums, spiritualism) Someone who supposedly conveys information from the spirit world.

From Middle English gost, gast, from Old English gāst (“breath, soul, spirit, ghost, being”), from Proto-West Germanic *gaist, from Proto-Germanic *gaistaz (“ghost, spirit”), from Proto-Indo-European *ǵʰéysd-os, from *ǵʰéysd- (“anger, agitation”). Cognate with Scots ghaist (“ghost”), Saterland Frisian Gäist (“spirit”), West Frisian geast (“spirit”), Dutch geest (“spirit, mind, ghost”), German Geist (“spirit, mind, intellect”), Swedish gast (“ghost”), Sanskrit हेड (héḍa, “anger, hatred”), Persian زشت‎ (zešt, “ugly, hateful, disgusting”).

ghost (countable and uncountable, plural ghosts)

(uncommon or dated) The spirit; the soul of man.

The disembodied soul; the soul or spirit of a deceased person; a spirit appearing after death

Everyone believed that the ghost of an old lady haunted the crypt.

(soul): essence, soul, spirit

(spirit appearing after death): apparition, bogey, haint, phantom, revenant, specter/spectre, spook, wraith.

(faint shadowy semblance): glimmer, glimmering, glimpse, hint, inkling, phantom, spark, suggestion.

(false image in an optical device):

(false image on a television screen): echo

(ghostwriter): ghostwriter

(unresponsive user):