pyramidal : Idioms & Phrases
pyramidal bone
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noun a wrist bone that articulates with the pisiform and hamate and lunate bones
triquetral; os triquetrum; triquetral bone; cuneiform bone.
WordNet
pyramidal motor system
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noun any of the important motor nerves on each side of the central nervous system that run from the sensorimotor areas of the cortex through the brainstem to motor neurons of the cranial nerve nuclei and the ventral root of the spinal cord
corticospinal tract; pyramidal motor system.
WordNet
Pyramidal numbers
(Math.) , certain series of figurate numbers expressing the number of balls or points that may be arranged in the form of pyramids. Thus 1, 4, 10, 20, 35, etc., are trangular pyramidal numbers; and 1, 5, 14, 30, 55, etc., are square pyramidal numbers.
Webster 1913
pyramidal tent
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noun a large tent shaped like a pyramid; can hold half a dozen people
WordNet
pyramidal tract
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noun any of the important motor nerves on each side of the central nervous system that run from the sensorimotor areas of the cortex through the brainstem to motor neurons of the cranial nerve nuclei and the ventral root of the spinal cord
corticospinal tract; pyramidal motor system.
