modiusEtymologyLearned borrowing from Latin modius, from modus (“a measure”) + -ius (adjective-forming suffix). Doublet of muid and mud. See also almud and almude.modius means A Roman dry measure of about a peck or 9 litres. Lexicurio rates it Sui generis — a strength score of 87 out of 100.nounA Roman dry measure of about a peck or 9 litres.Various medieval units of dry and liquid volume.A bushel-shaped headdress worn by certain deities in classical art.