| Word | Definitions | Synonyms |
|---|---|---|
| amethopterin | (noun) toxic antimetabolite that limits cellular reproduction by acting as an antagonist to folic acid; used to treat certain cancers and psoriasis and rheumatoid arthritis | Synonyms: methotrexate, methotrexate sodium |
| amethyst | (noun) a transparent purple variety of quartz; used as a gemstone | - |
| ametria | (noun) congenital absence of the uterus | - |
| ametropia | (noun) (ophthalmology) faulty refraction of light rays in the eye as in astigmatism or myopia | - |