olfactory pyramid

ol·fac·to·ry pyr·a·mid

a small area of gray matter situated between the roots of the olfactory tracts; it is continuous caudally with the anterior perforated substance.
References in periodicals archive ?
Selecting materials of exceptional quality and combining them with unprecedented molecules, the two women have challenged the established codes of the olfactory pyramid to create a round and vibrant fragrance, in which the notes interact and, once in contact with the skin, blossom and blend.
The perfume itself breaks codes, too, as it is not defined by the traditional olfactory pyramid. Its structure is a balance between a powerful heart, a marble accord, and four natural raw ingredients that add facets to the note.