ogive

[oh-jahyv, oh-jahyv]
noun
1.
Architecture.
a.
a diagonal vaulting rib.
b.
a pointed arch.
2.
Statistics. the distribution curve of a frequency distribution.
3.
Rocketry. the curved nose of a missile or rocket.

Origin:
1605–15; < French, Middle French ogive, augive < Spanish aljibe < Spanish Arabic al-jibb the well

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ogive (ˈəʊdʒaɪv, əʊˈdʒaɪv)
 
n
1.  a diagonal rib or groin of a Gothic vault
2.  another name for lancet arch
3.  statistics a graph the ordinates of which represent cumulative frequencies of the values indicated by the corresponding abscissas
4.  the conical head of a missile or rocket that protects the payload during its passage through the atmosphere
 
[C17: from Old French, of uncertain origin]
 
o'gival
 
adj

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Example sentences
The traditional delta scale uses an inverse normal transformation based on normal ogive models developed years ago.
We are developing machines for manufacturing of conformal, aspherical and ogive shaped optical elements.
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