natural obstacle

См. также в других словарях:

• obstacle — n. 1) to pose an obstacle 2) to come across, encounter an obstacle 3) to clear, overcome, surmount an obstacle 4) (of a horse) to take an obstacle 5) to remove an obstacle 6) a formidable; insurmountable obstacle 7) an artificial; natural… …   Combinatory dictionary

• Natural lines of drift — are those paths across terrain that are the most likely to be used when going from one place to another. These paths are paths of least resistance: those that offer the greatest ease while taking into account obstacles (e.g. rivers, cliffs, dense …   Wikipedia

• Natural barrier — The most common use of the term natural barrier is in geography, where it refers to a naturally occurring obstacle to movement, especially of people and especially at modest technological levels. Mountains, swamps, deserts and icefields are among …   Wikipedia

• Natural-born-citizen clause of the U.S. Constitution — Part of the constitutional provision as it appeared in 1787 Status as a natural born citizen of the United States is one of the eligibility requirements established in the United States Constitution for election to the office of President or Vice …   Wikipedia

• obstacle race — /ˈɒbstəkəl reɪs/ (say obstuhkuhl rays) noun a race in which runners have to contend with both natural and artificial obstacles. –obstacle racing, noun …  

• obstacle — Any obstruction designed or employed to disrupt, fix, turn, or block the movement of an opposing force, and to impose additional losses in personnel, time, and equipment on the opposing force. Obstacles can be natural, manmade, or a combination… …   Military dictionary

• obstacle — An existing object, object of natural growth, or terrain at a fixed geographical location, or one that is expected at a fixed location within a prescribed area with reference to which a vertical clearance is or must be provided during flight… …   Aviation dictionary

• Kentucky — This article is about the Commonwealth of Kentucky. For other uses, see Kentucky (disambiguation). Commonwealth of Kentucky …   Wikipedia

• Encirclement — is a military term for the situation when a force or target is isolated and surrounded by enemy forces. This situation is highly dangerous for the encircled force: at the strategic level, because it cannot receive supplies or reinforcements, and… …   Wikipedia

• Geography of Bulgaria — Bulgaria Continent Europe …   Wikipedia

• New Haven, Connecticut — New Haven redirects here. For other uses, see New Haven (disambiguation). City of New Haven   City   Skyline of Downtown New Haven …   Wikipedia