词根词缀:chordo-, chord-, cordo-, cord-
【来源及含义】Greek: khorde, "gut string" [of a lyre]; used in an extended sense to mean "sinew, flexible rod-shaped organ, string, cord"; Latin: chorda, "related notes in music, string of a musical instrument, cat-gut" via Old French, corde, "rope, string, twist, cord"
【同源单词】anemochord, cephalochordata, chordata, chordectomy, chorditis, chronic subglottic laryngitis
词根词缀:penta-, pent-, pente-, pento-
【来源及含义】Greek: five; a number used as a prefix
【同源单词】molybdenum pentachloride, pentacanth, pentacanthous, pentachord, pentacle, pentactinal