| 释义 |
Definition of mamelon in English: mamelonnoun ˈmamɪlən Biology A small rounded structure, e.g. the central knob of a tubercle on a sea urchin. Example sentencesExamples - The second type is similar to the first in having laminae and possibly pillars, yet it lacks the mamelons.
- Associated with mamelons are canals called astrorhizae.
- The only adults with mamelons have an ‘open bite,’ which means that the front teeth don't touch each other, and the wearing off of the mamelons doesn't take place.
- Thus, though in Arceuthobium the mamelon is always free from the ovary walls, in Loranthus a series can be traced through forms in which there is a temporary chamber filled by later growth of the mamelon.
- On females note the uterus, ovary, vulva, and on males note the testis, ejaculatory duct, and the mamelons.
Origin Mid 19th century: from French, 'nipple', from mamelle 'breast', from Latin mamilla 'little breast'. |