spodium

noun

spo·​di·​um

ˈspōdēəm

plural -s

1

obsolete : a powder obtained as a product or residue of combustion (such as soot from melting metals or vegetable ash)

2

: bone or animal charcoal

especially : spent bone black from sugar factories used as fertilizer

Word History

Etymology

Middle English, from Latin, from Greek spodion, diminutive of spodos wood ash

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