n. tetralogie, combinatie van vier factoren of vier elementen, vier gemeenschappelijke symptomen of defecten (Geneeskunde); quadrivalent element (in Chemie); serie van vier kunstwerken (zoals van literatuur of muziek)
Definizione
quadrivalent
[?kw?dr?'ve?l(?)nt]
¦ adjective Chemistry another term for tetravalent.
In chemistry, the valence (US spelling) or valency (British spelling) of an element is the measure of its combining capacity with other atoms when it forms chemical compounds or molecules.
1. The disease was notably rare this season because of better pilgrims’ coverage with the quadrivalent meningococcal vaccination that was made mandatory for both external and internal pilgrims.