vacuum n.

1540s, "emptiness of space," from Latin vacuum "an empty space, vacant place, a void," noun use of neuter of vacuus "empty, unoccupied, devoid of," figuratively "free, unoccupied," from Proto-Italic *wakowos, related to the source of Latin vacare "to be empty" (from PIE *wak-, extended form of root *eue- "to leave, abandon, give out"), with adjectival suffix -uus. Properly a loan-translation of Greek kenon, literally "that which is empty."

Meaning "a space emptied of air" is attested from 1650s. Vacuum tube "glass thermionic device" is attested from 1859. Vacuum cleaner is from 1903; shortened form vacuum (n.) first recorded 1910.

The metaphysicians of Elea, Parmenides and Melissus, started the notion that a vacuum was impossible, and this became a favorite doctrine with Aristotle. All the scholastics upheld the maxim that "nature abhors a vacuum." [Century Dictionary]

vacuum v.

"to clean with a vacuum cleaner," by 1913, from vacuum (n.). Related: Vacuumed; vacuuming.

词汇	vacuum
词源	vacuum n. 1540s, "emptiness of space," from Latin vacuum "an empty space, vacant place, a void," noun use of neuter of vacuus "empty, unoccupied, devoid of," figuratively "free, unoccupied," from Proto-Italic wakowos, related to the source of Latin vacare "to be empty" (from PIE wak-, extended form of root eue- "to leave, abandon, give out"), with adjectival suffix -uus. Properly a loan-translation of Greek kenon, literally "that which is empty." Meaning "a space emptied of air" is attested from 1650s. Vacuum tube* "glass thermionic device" is attested from 1859. Vacuum cleaner is from 1903; shortened form vacuum (n.) first recorded 1910. The metaphysicians of Elea, Parmenides and Melissus, started the notion that a vacuum was impossible, and this became a favorite doctrine with Aristotle. All the scholastics upheld the maxim that "nature abhors a vacuum." [Century Dictionary] vacuum v. "to clean with a vacuum cleaner," by 1913, from vacuum (n.). Related: Vacuumed; vacuuming. Entries linking to vacuum eue- euə-, Proto-Indo-European root meaning "to leave, abandon, give out," with derivatives meaning "abandoned, lacking, empty." It forms all or part of: avoid; devastation; devoid; evacuate; evanescent; vacant; vacate; vacation; vacuity; vacuole; vacuous; vacuum; vain; vanish; vanity; vaunt; void; wane; want; wanton; waste. It is the hypothetical source of/evidence for its existence is provided by: Sanskrit una- "deficient;" Avestan va- "lack," Persian vang "empty, poor;" Armenian unain "empty;" Latin vacare "to be empty," vastus "empty, waste," vanus "empty, void," figuratively "idle, fruitless;" Old English wanian "to lessen," wan "deficient;" Old Norse vanta "to lack." vac 1709 as a colloquial shortening of vacation (n.); 1942 as a colloquial shortening of vacuum (v.); 1974 as a colloquial shortening of vacuum cleaner. updated on May 17, 2021
随便看	immortalization immortalize immortelle immovability immovable immune immunity immunization immunize immunodeficiency immunology immure immutability immutable imp impact impacted impactful impaction impair impairment impala impale impalement impalpable

vacuum n.

Entries linking to vacuum