Nummulite(n.) A fossil of the genus Nummulites and allied genera.
Nummulites(n.) A genus of extinct Tertiary Foraminifera, having a thin, flat, round shell, containing a large number of small chambers arranged spirally.
Nummulitic(a.) Of, like, composed of, containing, nummulites; as, nummulitic beds.
Words within nummulite