词根词缀：insulino-, insulin-, insula-, insulo-, insul-, isle

【来源及含义】Latin: island; derived from insul[a], "island" [used here in reference to the islands [islets] of Langerhans, irregular structures in the pancreas that produce the protein hormone insulin which is secreted into the blood where it regulates sugar metabolism]

【同源单词】aisle, circuminsular, ethological isolation, insular, insularism, insularity

词根词缀：peni-, pen-

【来源及含义】Latin: paene, almost, nearly

【同源单词】antepenult, antepenultimate, antepenultimate, Baja California Peninsula, Iberian Peninsula, peninsula

词根词缀：-ular

【来源及含义】Latin: of, relating to, or resembling; compound of the suffixes -ule, "little, small" and -ar, "pertaining to, of the nature of, like"; and so, -ular is a combining form meaning: referring to something "specified": appendicular, molecular, pedicular; as well as, a combining form meaning "resembling" something specified: circular, globular, tubular

【同源单词】abarticular, acellular, acicular ice, acinotubular, acromioclavicular, acutangular