表壳虫目：叶足纲(class Lo-bosia)壳叶亚纲(Testacealobosia)中自由生活的阿米巴原虫目，其特征为：虫体由甲壳、顶盖或其它外膜包围，这些虫体包围物皆构成于有机和(或)无机物质，有明显孔隙，伪足即由此伸出(叶状或线状伪足)；以表壳虫属(Arcella)和沙壳虫属(Difflugia)为其代表- macrocephaly
- macrocheilia
- macrocheiria
- macrochemical
- macrochemistry
- macrochilia
- macrochiria
- macroclitoris
- macrocnemia
- macrocolon
- macroconidium
- macrocornea
- macrocrania
- macrocyst
- macrocytase
- macrocyte
- macrocythemia
- macrocytic
- macrocytosis
- macrodactylia
- macrodactyly
- Macrodantin
- macrodont
- macrodontia
- macrodontic