| aminoglycoside |
any of a group of antibiotics, such as streptomycin, that is used to treat bacterial infections. |
| amir |
a variant of emir. |
| Amish |
a Christian sect that separated from the Mennonites in the seventeenth century, the members of which advocate simple living and now live mostly in farming areas of the northeastern United States. [3 definitions] |
| amiss |
out of the proper course or order; wrongly; mistakenly. [2 definitions] |
| amitosis |
direct cell division in which the nucleus divides without the formation of chromosomes. (Cf. mitosis.) |
| amitriptyline |
a tricyclic antidepressant drug used to treat depression, attention deficit hyperactivity disorder (ADHD), and other mental disorders. |
| amity |
friendly and peaceful relations; good will. |
| Amman |
the capital of Jordan. |
| ammeter |
an instrument that measures the magnitude of an electrical current in amperes. |
| ammo |
(informal) ammunition. |
| Ammon |
the Greek and Roman name for Amen or Amen-Re, the ancient Egyptian god of life, often identified with Zeus and Jupiter. |
| ammonia |
the pungent gas formed from the chemical combination of nitrogen and hydrogen, used esp. in refrigeration and in making fertilizers. [2 definitions] |
| ammoniac |
a sharp-smelling gum resin from the stem of an Asian plant, used in perfumes and porcelain cements; gum ammoniac. [2 definitions] |
| ammoniate |
to treat, combine, or mix with ammonia. [2 definitions] |
| ammonification |
infusion with ammonia or an ammonium compound, as in the production of fertilizer. [2 definitions] |
| ammonite1 |
any of various coiled, flat, chambered fossil shells of extinct cephalopod mollusks from the Mesozoic era. |
| ammonite2 |
a nitrogenous mixture that consists mainly of dried animal fats, used as a fertilizer. |
| ammonium |
the ion resulting from the chemical combination of ammonia and a hydrogen ion. |
| ammonium carbonate |
a white powder that is used in baking powder, smelling salts, and substances for fire-extinguishing. |
| ammonium chloride |
a white crystalline salt used in dry cells, in medicine as an expectorant, and in various industrial applications; sal ammoniac. |
| ammonium hydroxide |
a colorless basic solution produced by dissolving ammonia in water, used as a household cleaner and in the production of textiles, plastic, and the like. (See ammonia.) |