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Word of the Day
Wednesday, May 24, 2000

Definitions for deleterious

  1. Harmful; destructive; pernicious.

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Citations for deleterious
Heat, especially year-round heat, has an even more deleterious consequence: it encourages the proliferation of life forms hostile to man. David S. Landes, The Wealth and Poverty of Nations
Hikers can minimize the deleterious effects of high altitudes by spending two days acclimatizing themselves at spots around 8,000 feet. Nancy Stedman, New York Times
Origin of deleterious
1635-1645
Deleterious is derived from Greek deleterios, from deleisthai, "to hurt, to damage."