词根词缀：-cene

【来源及含义】Greek: a suffix; new, denotes certain "recent" eons when naming geological periods

【同源单词】Eocene, Oligocene, Paleocene, Pleistocene, Pliocene

词根词缀：olig-, oligo-

【来源及含义】Greek: prefix; scanty, little, meager, tiny, infrequent; abnormally few or small

【相关词根词缀】Related "few, small, less, little" word units: micro-; mini-; mio-, meio-; nano-.

【同源单词】oligacanthous, oligandrous, oliganthous, oligarch, oligarchic, oligarchical