breadth : Idioms & Phrases
breadth index
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noun ratio (in percent) of the maximum breadth to the maximum length of a skull
cranial index; cephalic index.
WordNet
finger's breadth
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noun the length of breadth of a finger used as a linear measure
fingerbreadth; digit; finger.
WordNet
hair's-breadth
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noun a very small distance or space
hair; whisker; hairsbreadth.
- they escaped by a hair's-breadth
- they lost the election by a whisker
WordNet
Half-breadth plan
(Shipbuilding) , a horizontal plan of the half a vessel, divided lengthwise, showing the lines.