This is a series of posts on interesting and unusual words and phrases.
The first set of words are adjectives that describe a shape and are often used in botany, mineralogy, and describing artistic forms.
The word for today is acetabuliform: saucer-shaped, from the Latin acetabulum.
Acetabulum:

https://orthoinfo.aaos.org/en/diseases–conditions/acetabular-fractures/
