focal point

Pronunciation:			'fowkul poynt
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Matching Terms:			focal point velocity
WordNet Dictionary
	Definition:		[n]  a point of convergence of light (or other radiation) or a point from which it diverges
	Synonyms:		focus
	See Also:		point
Biology Dictionary
	Definition:		Location of an organism; for fish, usually the position of the snout. Habitat measurements made at that position (depth, water velocity, etc.) are focal point measurements.