The Collaborative International Dictionary
Decastere
Decastere \Dec"a*stere\, n. [L. d['e]cast[`e]re; Gr. de`ka ten + F. st[`e]re a stere.] (Metric System) A measure of capacity, equal to ten steres, or ten cubic meters.
Wiktionary
decastere
n. A measure of capacity equal to ten steres or cubic metres.