FAQs About the word underclay

argilla refrattaria

A stratum of clay lying beneath a coal bed, often containing the roots of coal plants, especially the Stigmaria.

No synonyms found.

No antonyms found.

underclassman => studente di classi inferiori, underclass => Sottoclasse, undercharge => addebitare un importo inferiore, underchaps => Guance, underchanter => bordone,