DELIQUIUM
faint, swoon, syncope, deliquium
(noun) a spontaneous loss of consciousness caused by insufficient blood to the brain
Source: WordNet® 3.1
Etymology
Noun
deliquium (plural deliquiums)
(chemistry) Liquefaction through absorption of moisture from the air.
(pathology) An abrupt loss of consciousness usually caused by an insufficient blood flow to the brain; fainting.
(literary, figuratively) A languid, maudlin mood.
(rare) An abrupt absence of sunlight, e.g. caused by an eclipse.
Source: Wiktionary
De*liq"ui*um, n. Etym: [L. See Deliquiate.]
1. (Chem.)
Definition: A melting or dissolution in the air, or in a moist place; a
liquid condition; as, a salt falls into a deliquium. [R.]
2. A sinking away; a swooning. [Obs.] Bacon.
3. A melting or maudlin mood. Carlyle.
Source: Webster’s Unabridged Dictionary 1913 Edition