From
www.dictionary.com :
vac·u·um
Pronunciation Key (vky-m, -ym, -ym)
n. pl. vac·u·ums or vac·u·a (-y-)
1.
a.Absence of matter.
b.A space empty of matter.
c.A space relatively empty of matter.
d.A space in which the pressure is significantly lower than atmospheric pressure.
2.A state of emptiness; a void.
3.A state of being sealed off from external or environmental influences; isolation.
4.pl. vac·uums A vacuum cleaner.
adj.
1.Of, relating to, or used to create a vacuum.
2.Containing air or other gas at a reduced pressure.
3.Operating by means of suction or by maintaining a partial vacuum.
tr. & intr.v. vac·u·umed, vac·u·um·ing, vac·u·umes
To clean with or use a vacuum cleaner.
[Latin, empty space, from neuter of vacuus, empty, from vacre, to be empty. See eu- in
Indo-European Roots.]
There will be a quiz later to see how many of us remember it.
