词根词缀：duo-, du-

【来源及含义】Latin: two, double; a word element for the number "2"

【同源单词】conduplicate, deuce, double, double-dealing, doublet, doubletalk

词根词缀：duodecim-, duodec-

【来源及含义】Latin: twelve

【同源单词】duodecahedral, duodecennial, duodecimal, duodecimally, duodecimo

词根词缀：duodeno-, duoden-

【来源及含义】Latin: first part of the small intestine; based on duodecim, "twelve", because its length is approximately twelve finger-breadths

【同源单词】antroduodenectomy, autocholecystoduodenostomy, duodenal, duodenectomy, duodenitis, duodenogram

词根词缀：duro-, dur-, dura-

【来源及含义】Latin: hard [as wood], lasting; thick, tough

【同源单词】dour, dourly, dourness, dura mater, durability, durable

词根词缀：dyna-, dyn-, dynamo-, -dyne, -dynamia, -dynamic

【来源及含义】Greek: power, strength, force, mightiness

【同源单词】adynamandrous, adynamia, adynamic, adynamogynous, aerodyne, aeromechanics

词根词缀：dys-

【来源及含义】Greek: bad, harsh, wrong; ill; hard to do, difficult at; slow of; disordered; impaired, defective

【相关词根词缀】Inter-related cross references, directly or indirectly, involving word units meaning "bad, wrong": caco-, kako-; mal-; mis-; pessim-; sceler-. Cross references directly, or indirectly, involving "slow, slowness, slow of, sluggish": lent-; tard-.

【同源单词】acrodysaesthesia, acrodysostosis, algesidystrophy, algodystrophy, amebic dysentery, amylodyspepsia