Another indicator of the presence of medical waste, which may be used instead of or in addition to the red or orange color code, is the BIOHAZARD symbol. Medical waste from health care facilities must be treated in a way that destroys its potential for causing disease, prior to disposing it in a landfill.
In classical logic disjunctive syllogism (historically known as modus tollendo ponens) is a valid argument form which is a syllogism having a disjunctive statement for one of its premises.
2. Logic. a. One of the propositions in a deductive argument. b. Either the major or the minor proposition of a syllogism, from which the conclusion is drawn. 3. premises. a. Land, the buildings on it, or both the land and the buildings on it. b. A building or particular portion of a building.