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valence in chemistry, the quality that determines the number of atoms or chemical groups with which a given atom can form simultaneous covalent bonds. [2 definitions]
valence electrons electrons in the outer shell of an atom that largely determine its properties and that can be transferred to, or shared with, another atom.
-valent having (such) a valence or valences.
valentine a greeting card, gift, or the like sent as a token of affection on Valentine's Day. [2 definitions]
Valentine's Day see Saint Valentine's Day.
valerian any of various plants bearing dense clusters of white, pink, red, or purple flowers and having a root that is used for medicinal purposes. [2 definitions]
valet a manservant who attends to the personal needs of his employer, such as getting that person properly dressed. [5 definitions]
valetudinarian a person confined or incapacitated by poor health; invalid. [4 definitions]
valetudinary a valetudinarian.
Valhalla in Scandinavian mythology, the hall where Odin receives and enshrines the heroes who have died bravely in battle.
valiant showing or characterized by courage in both spirit and action; brave; heroic. [3 definitions]
valid equitable; just. [4 definitions]
validate to prove valid or acceptable; verify. [2 definitions]
validation the act or process of proving or confirming (something) to be valid or acceptable. [2 definitions]
validity the quality or condition of being valid.
valise a small piece of hand luggage.
Valkyrie in Scandinavian mythology, any of the maidens who bring dead battle heroes to Valhalla and attend them there.
Valletta the seaport capital of Malta.
valley a long area of relatively low elevation, often having a stream bed at the bottom, surrounded by mountains or hills. [2 definitions]
valor boldness in facing danger; courage; bravery.
valorize to fix or maintain the price of (a commodity), esp. by a government, as by buying up a commodity at a fixed price or by making special loans to the producers.