| van der Waals b. |
a weak electrostatic attraction arising from a nonspecific attractive force originating when two molecules are close to one another and the distribution of electrons is uneven, the locations lacking electrons attracting the locations with surplus electrons.
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| van der Waals f.’s |
the relatively weak, short-range forces of attraction existing between atoms and molecules and arising from brief shifts of orbital electrons on one side of the atom or molecule and the corresponding electron shifts in adjacent molecules; it results in the attraction of nonpolar organic compounds to each other.
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| van der Waals r. |
the distance at which there is a balance between van der Waals attractive and repulsive forces in the formation of chemical bonds.
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| Van der Woude's s. |
an autosomal dominant syndrome consisting of cleft lip with or without cleft palate, with cysts of the lower lip.
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| van Gehuchten's m. |
fixing of a histologic tissue in a mixture of glacial acetic acid 10 parts, chloroform 30 parts, and alcohol 60 parts.
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