rounden

verb — 2 senses

verb

Etymology From round + -en.

To make round or rounded

To become round or rounded

This specimen shows a wide, concave and smooth fossula with a clear-cut thread tying the first tooth to the first denticle; there are still four other irregular denticles after which the inside part of the fossula sinks and roundens.1974, La Conchiglia, volume 6, page 9:

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.