metaplasm，英语单词，主要用作名词，作名词时译为“词形变异；[生物] 后成质”。

柯林斯英汉双解大词典

metaplasm /ˈmɛtəˌplæzəm/

1.N the nonliving constituents, such as starch and pigment granules, of the cytoplasm of a cell 后成质

The vogue words can be divided into three kinds: metaplasm, derogatory sense translate into commendatory, new loanword.由原有的贬义词转化为富有褒义义项的词；以前没有，后来完全新创的外来词。

This paper probes into the translation of those figures of sound such as alliteration, metaplasm, word play, homophonic pun, etc.本文探讨了头韵、语音变格、文字游戏、谐音双关等音韵修辞的翻译方法。