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aquaculture

  • n.. The farming of aquatic organisms.

upper stage

  • n.. The stage of a rocket after the first stage.

lunar litter

  • n.. Trash and debris left on the moon's surface.

infect

  • v.t.. To contaminate with a disease-causing organism.
  • v.i.. To become contaminated with a disease.

viable

  • adj.. Capable of working successfully.

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