丘嵴牙型：颊齿冠的面上兼有圆丘和横嵴者，例如某些袋鼠- meteorosensitive
- meteorotropic
- meteorotropism
- metepencephalon
- -meter
- meter
- metergasis
- metestrum
- metestrus
- metformin
- methacholine
- methacrylate
- methacrylic acid
- methacycline
- methadone hydrochloride
- methadyl acetate
- methallenestril
- methallibure
- methamphetamine
- methandriol
- methandrostenolone
- methane
- methanesulfonate
- methanesulfonic acid
- Methanobacteriaceae