Dictionary » B » Boom



1. A long pole or spar, run out for the purpose of extending the bottom of a particular sail; as, the jib boom, the studding-sail boom, etc.

2. (Science: mechanics) a long spar or beam, projecting from the mast of a derrick, from the outer end of which the body to be lifted is suspended.

3. A pole with a conspicuous top, set up to mark the channel in a river or harbor.

4. (Science: astronomy) a strong chain cable, or line of spars bound together, extended across a river or the mouth of a harbor, to obstruct navigation or passage.

5. A line of connected floating timbers stretched across a river, or inclosing an area of water, to keep saw logs, etc, from floating away. Boom iron, one of the iron rings on the yards through which the studding-sail booms traverse. The booms, that space on the upper deck of a ship between the foremast and mainmast, where the boats, spare spars, etc, are stowed.

Origin: D. Boom tree, pole, beam, bar. See beam.

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... concerned with questions of safety, because if you take a flask and you mix it with methane and hydrogen and ammonia, the most likely result is BOOM, with flying glass in all directions, which is definitely not publishable. With regard to safety, he built a certain apparatus, let it run for ...

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by scottie
Mon Oct 03, 2011 2:24 pm
Forum: Evolution
Topic: Theories - Origin of Life
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Thu Mar 18, 2010 5:55 pm
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Superhuman abilities

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by kolean
Mon Nov 30, 2009 3:16 pm
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Topic: Superhuman abilities
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Systems Biology

Anyone have any recommendations for a good sys bio book? Seems like this field is like epigenetics, with it's boom and bust cycle of interest.

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by mith
Fri Oct 02, 2009 5:36 pm
Forum: General Discussion
Topic: Systems Biology
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Views: 769
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