All Words Glossary

Glossary of Chemistry Terms
beginning with letter U
Browse the Chemistry Glossary
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

U Tweet Definition of U Like Definition of U on Facebook
noun
  1. The twenty-first letter of the Appendix:Roman script, English alphabet.
adjective
  1. (context, mostly, British) Characteristic of the upper classes, particularly in use of language.
abbreviation
  1. (British film certificate) Universal - suitable for all ages
  2. Under
  3. University
  4. Up, Upper
unbound Tweet Definition of unbound Like Definition of unbound on Facebook
verb
  1. past tense of to unbind
univalent Tweet Definition of univalent Like Definition of univalent on Facebook
adjective
  1. (chemistry) Having a valence of 1, or having only one valence.
  2. (genetics) Of, or relating to a chromosome that is not paired with its homologous chromosome during synapsis.
unsaturated Tweet Definition of unsaturated Like Definition of unsaturated on Facebook
adjective
  1. (context, chemistry, of a solution) Not saturated; capable of dissolving more of a solute at the same temperature.
  2. (chemistry) Of a compound containing atoms sharing more than one valence bond, especially of an organic compound having one or more double bonds or triple bonds between carbon atoms.
  3. (context, of a colour) Not chromatically pure; diluted.
unstable Tweet Definition of unstable Like Definition of unstable on Facebook
adjective
  1. Having a strong tendency to change
  2. fluctuate, Fluctuating; not constant
  3. fickle
  4. unpredictable
  5. (chemistry) Readily decompose, decompasable
  6. (physics) radioactive, Radioactive, especially with a short half-life
Urania Tweet Definition of Urania Like Definition of Urania on Facebook
proper noun
  1. (Greek mythology) The Muse of astronomy.
uranic Tweet Definition of uranic Like Definition of uranic on Facebook
adjective
  1. (chemistry) Containing uranium in higher valences than uranous compounds.
uranium hexafluoride Tweet Definition of uranium hexafluoride Like Definition of uranium hexafluoride on Facebook
noun
  1. (chemistry) a binary compound of uranium and fluorine, UF6; it is a grey solid, or heavy gas, and is used in the uranium enrichment process to produce fuel for nuclear reactors or nuclear weapons
uranous Tweet Definition of uranous Like Definition of uranous on Facebook
adjective
  1. (chemistry) Containing uranium in higher valences than uranic compounds.
uranyl Tweet Definition of uranyl Like Definition of uranyl on Facebook
noun
  1. (chemistry) The divalent radical UO22+, conveniently regarded as a residue of many uranium compounds.
urate Tweet Definition of urate Like Definition of urate on Facebook
noun
  1. (chemistry) any salt of uric acid; the deposition of urate crystals in the joints leads to gout
urea Tweet Definition of urea Like Definition of urea on Facebook
noun
  1. (biochemistry) A water-soluble organic compound, CO(NH2)2, formed by the metabolism of proteins and excreted in the urine.
ureide Tweet Definition of ureide Like Definition of ureide on Facebook
noun
  1. (chemistry) any compound, of general formula R-CO-NH-CO-NH2 or R-CO-NH-CO-NH-CO-R', formally derived by the acylation of urea
urethane Tweet Definition of urethane Like Definition of urethane on Facebook
noun
  1. (organic compound, uncountable) A white crystalline organic compound, ethyl-carbamate, NH2COOC2H5, used in the synthesis of other organic compounds.
  2. (organic chemistry, countable) Any compound of having this general structure.
uric acid Tweet Definition of uric acid Like Definition of uric acid on Facebook
noun
  1. (chemistry) a bicyclic heterocyclic phenolic compound, formed in the body by the metabolism of protein and excreted in the urine (or in avian faeces)

Browse the Dictionary
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

 Find:
  Words Starting With:
  Words Ending With:
  Words Containing:
  Words That Match:

 
Translate Into:
Dutch   French   German
  
Italian   Spanish
    Show results per page.

   
Allwords Copyright 1998-2019 All rights reserved.

Share
Popular Pages