quaternary

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quaternary

 [kwah´ter-nar″e, kwah-ter´nar-e]
1. fourth in a series.
2. made up of four elements or groups.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

qua·ter·nar·y (Q),

(kwah'tĕr-nār'ē, kwah-tĕr'nĕ-rē),
1. Denoting a chemical compound containing four elements; for example, NaHSO4. Compare: quaternary structure.
2. Fourth in a series.
3. 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."
4. Referring to a level of structure of macromolecules in which more than one biopolymer is present. Compare: quaternary structure.
[L. quaternarius, fr. quaterni, four each, fr. quattuor, four, + -arius, adj. suffix]
Farlex Partner Medical Dictionary © Farlex 2012

qua·ter·nar·y

(kwah'tĕr-nar-ē)
1. Denoting a chemical compound containing four elements.
2. Fourth in a series.
3. Relating to organic compounds in which some central atom is attached to four functional groups.
4. Referring to a level of structure of macromolecules in which more than one biopolymer is present.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

qua·ter·nar·y

(Q) (kwah'tĕr-nar-ē)
1. Denoting a chemical compound containing four elements.
2. Fourth in a series.
3. Relating to organic compounds in which some central atom is attached to four functional groups.
Medical Dictionary for the Dental Professions © Farlex 2012