I. pə̇ˈraməd ə l, ÷|pirə|mid ə l adjective
Etymology: Medieval Latin pyramidalis, from Latin pyramid-, pyramis + -alis -al
1.
a. : of, relating to, or having the form of a pyramid
b. : having symmetry such that the general form is a pyramid
a pyramidal crystal
2. : sloping like a face of a pyramid
the sheer pyramidal side of the cliff
3. : huge , enormous , imposing
4. : affecting, involving, or connecting with an anatomical pyramid especially of the central nervous system
a crossed pyramidal lesion
the inferior pyramidal tracts
II. noun
( -s )
Etymology: New Latin pyramidale
1. : pyramidal bone
2. : a pyramidal tent