词根词缀：aceto-, acet-; relating to acetic acid derivatives

【来源及含义】Latin: vinegar; sour, to be sour

【相关词根词缀】 Cross references of word families that are related directly, or indirectly, to: "sour, sharp": acerb-; acid-; acies- (not "sour"); acuto- (not "sour"); oxy-; pung- (not "sour").

【同源单词】acetal, acetate, acetic, acetic, acetification, acetifier

词根词缀：marathon-; and related entries ending in -athon, -thon

【来源及含义】Greek: derived from an ancient villiage in Greece, northeast of Athens; as a result of an important Greek victory over the Persians in 490 B.C.

【同源单词】hackathon, Marathon, marathon, marathon, marathon, marathoner