| vaccination |
the act or practice of inoculating persons or animals with modified, killed, or avirulent viruses or bacteria in order to protect against specific diseases. |
| vaccine |
a specimen of modified, killed, or avirulent viruses or bacteria, used to inoculate persons or animals in order to stimulate their immune systems to protect against virulent strains. [3 definitions] |
| vacillate |
to hesitate or waver in giving an opinion or making a decision; be indecisive. [2 definitions] |
| Václav Havel |
Czech author, playwright, and politician, who was the last President of Czechoslovakia and the first President of the Czech Republic (b.1936). |
| vacuity |
the state of being empty; emptiness. [4 definitions] |
| vacuole |
a membranous enclosure within a cell that contains substances isolated from the protoplasm, such as dissolved acids. [2 definitions] |
| vacuous |
lacking any content; empty. [2 definitions] |
| vacuum |
a space empty of all matter. [5 definitions] |
| vacuum bottle |
a bottle or flask with a vacuum between its double walls which helps to sustain the original temperature of the contents; thermos. |
| vacuum cleaner |
an electrical appliance that cleans floors, carpets, and the like by suction; vacuum sweeper. |
| vacuum-packed |
packed in a container from which as much of the air as possible has been removed before sealing. |
| vacuum-sealed |
of or relating to a packaged material that has had all the air removed. |
| vacuum tube |
an electron tube, formerly used in radio and electronics, from which the air has been evacuated, enabling electrons to move freely within the vacuum. |
| vade mecum |
(Latin) a resource that a person carries around constantly, such as a guidebook, manual, or map. |
| Vaduz |
the capital of Liechtenstein. |
| vagabond |
having no permanent home; wandering from place to place; nomadic. [6 definitions] |
| vagabondage |
the state or condition of being a vagabond or vagrant. |
| vagary |
an erratic, unpredictable, or extravagant occurrence, action, or idea; whim. |
| vagina |
in most female mammals, the passage leading from the uterus to the external genital opening; birth canal. [3 definitions] |
| vaginal |
of or relating to the vagina. |
| vaginate |
having a vagina or sheath. [2 definitions] |