1. clinical depression a state of depression and anhedonia so severe as to require clinical intervention
  2. ecological succession (ecology) the gradual and orderly process of change in an ecosystem brought about by the progressive replacement of one community by another until a stable climax is established
  3. planning commission a commission delegated to propose plans for future activities and developments
  4. slang expression informal language consisting of words and expressions that are not considered appropriate for formal occasions; often vituperative or vulgar
  5. gene expression conversion of the information encoded in a gene first into messenger RNA and then to a protein
  6. submission the act of surrendering power to another
  7. peacekeeping mission the activity of keeping the peace by military forces
  8. compassion a deep awareness of and sympathy for another's suffering
  9. Population Commission the commission of the Economic and Social Council of the United Nations that is concerned with population control
  10. Bacillus subtilis a species of bacillus found in soil and decomposing organic matter; some strains produce antibiotics
  11. reconnaissance mission the act of reconnoitring
  12. greenhouse emission a gas that contributes to the greenhouse effect by absorbing infrared radiation
  13. Fehling's solution a liquid solution of copper sulfate and potassium tartrate and sodium hydroxide that is used to test for sugar in the urine; solution turns reddish when sugar is present
  14. Languas speciosa cultivated for its shining oblong leaves and arching clusters of white flowers with pink shading and crinkled yellow lips with variegated magenta stripes
  15. Koplik's spots small red spots with white centers found on the mucous membranes of the mouth and tongue; symptom of measles that appears one or two days before the measles rash appears
  16. cooling system a mechanism for keeping something cool
  17. nuclear submarine a submarine that is propelled by nuclear power
  18. polling station a site where voters go to cast their votes in an election
  19. ballistic missile a missile that is guided in the first part of its flight but falls freely as it approaches target
  20. fairness commission a commission delegated to ensure opportunities for the expression of opposing views