- adjective referring to three structurally identical chromosomes that associate during the initial stage of meiosis
- adjective having a valency of three
- Pertaining to an element, such as boron or gallium, which has a valence of three. Such elements are used, for instance, as dopants which contribute mobile holes which increase the conductivity of an intrinsic semiconductor. doping with a trivalent chemical element makes a p-type semiconductor, while pentavalent elements provide for n-type semiconductors.
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