medico- [L] = medical 医学的，医疗的 

medico-athletics n. 医疗体育 

medico-botanical a. 药用植物学的 

medico-legal a. 法医学的

mega- [GK] = large 大；one million 百万，兆 

megalith n. 巨石 [-lith = stone]

megaphone n. 扩音器 [-phone = an instrument for better sound]

megacycle n. [无]兆周 

megaton n. 百万吨级

megalo- [GK] = great 特大

megaloblast n. [医]巨胚红血球[-blast = cell] 

megalomania n. 自大狂 [-mania = unreasonable fondness of] 

megalopolis n. 特大的城市[polis = city] 

melan(o)- [GK] = black 黑

melancholia n. [医]忧郁症[chol = bile n. 胆汁；坏脾气] 

Melanochroi n. 黑发白肤的高加索人 [ochr = pale] 

melanoma n. [医]黑瘤 [-oma = tumor] 

melanoderm n. 黑皮肤的人[derm = skin] 

melanophore n. [生化]黑色素[-phore = bearer]

meso- [GK] = middle 中间；intermediate 中介

mesocephalic a. [解]中头型的 [cephal = head] 

mesoderm n. [物]中层；中胚层[derm = skin] 

Mesozoic n. & a. [地]中生代（的） [zo = life, animal] 

Mesolithic a. (关于）中石器时代的[lith = stone]

meta- [GK] = change of place or state 变化，变位，变形；beyond 超 

metabolism n. 新陈代谢 [bol = to throw] 

metachromatism n. (温度引起的）变色反应 [chromat = colour]

metamorphic a. 变形的  [morph = form] 

metaphor n. [语]隐喻 [phor = thing that carries] 

metachemistry n. 超级化学；原子结构化学 

metaphysical a. 超自然的；形而上学的，玄学的