A pointed projection, like a four-sided pyramid, used for ornament in lines or groups.
The three radial spines united in the central point lie here not in one plane, but diverge in different planes, so that they correspond to the three lateral edges of a three-sided pyramid.
Plectophora and Plectaniscus a three-sided pyramid, of Tetraplecta (Pl.
Plagonida# with three radial spines, arising from one common central point and corresponding to the edges of a three-sided pyramid.
Plectanida# with three radial spines, arising from one common central point and corresponding to the edges of a three-sided pyramid.
Basal part of a radial tube, exhibiting the internal axial thread and its connection with the six tubes, which form the edges of a flat six-sided pyramid (usually more elevated than the figure exhibits).
A single tent-shaped elevation or six-sided pyramid, bearing on the top a brush-shaped radial tube.
Apex of a six-sided pyramid, seen from the inside.
Basal part of a radial tube, in the top of a flat six-sided pyramid; above it the distal part of the same tube with its terminal corona (middle part of the tube wanting).
Illustration] It will be seen that the tetrahedron is the fundamental form, the three-sided pyramid on a triangular base, i.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "sided pyramid" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
