Pronunciation: kwah'ter-nar'e, kwah-ter'ne-re
- Denoting a chemical compound containing four elements; NaHSO4.
- Fourth in a series.
- Relating to organic compounds in which some central atom is attached to four functional groups; applied to the usually trivalent nitrogen in its “onium” state, R4N+, “quaternary nitrogen.”
- Referring to a level of structure of macromolecules in which more than one biopolymer is present.
[L. quaternarius, fr. quaterni, four each, fr. quattuor, four, + -arius, adj. suffix]
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Examples: glitazone, GI cocktail, etc.