| agent |
a person with authority to perform certain actions on behalf of another. [1/5 definitions] |
| agrochemical |
a chemical made from certain agricultural products. [1/2 definitions] |
| agt. |
abbreviation of "agent," a person with authority to perform certain actions on behalf of another. |
| air bladder |
an air-filled sac in various animals and plants, esp. such a structure located near the spine of certain fish that functions to maintain buoyancy by regulating hydrostatic pressure. (See swim bladder.) |
| air sac |
an air-filled space or cavity in a living organism, esp. any of the ends of certain bronchial tubes in a bird's body that connect with the larger body cavity and assist in breathing. |
| alkali |
any of a category of base chemicals, made up of hydroxides of certain metals and of ammonium, which neutralize acids to form salts. [1/2 definitions] |
| allergic |
having abnormal or disabling sensitivity to certain agents such as drugs, food, or pollen, resulting in a hypersensitive reaction upon exposure (usu. fol. by "to"). [1/3 definitions] |
| allergy |
a pathological state of extreme sensitivity to certain substances, causing respiratory difficulties, skin rashes, and other problems. |
| allow |
to provide or set aside (a certain amount). [1/5 definitions] |
| anaconda |
any of several large nonvenomous constrictor snakes, esp. a certain South American tree snake that can grow to over twenty feet in length. |
| anaerobe |
any of various microorganisms, such as certain bacteria, that are capable of living without air or oxygen. |
| analogical |
of, expressing, or based on a certain similarity between two items that are otherwise dissimilar. |
| angel |
in certain theologies, a spiritual being acting as a servant or messenger of God, often represented as a human figure with wings and a halo. [1/3 definitions] |
| ant |
any of certain ground-dwelling insects that live in colonies of complex organization. |
| any |
one or some of a certain thing, no matter which, how much, or how many. [1/7 definitions] |
| aphtha |
a small white spot or blister on the lips or in the mouth or intestines that is a symptom of certain viral or fungal infections. |
| apostolic succession |
a doctrine of certain Christian faiths that their bishops are the successors in an unbroken line to the apostles of Jesus Christ. |
| appellation contrôlée |
(sometimes caps.) a designation on the labels of certain French wines or liquors, certifying that the contents meet prescribed standards. [1/2 definitions] |
| apraxia |
a disorder that prevents certain complex muscular movements, caused by damage to the brain. |
| apterous |
having no wings or parts resembling wings, as certain insects. |
| arbovirus |
any of a number of viruses that are transmitted by certain blood-sucking arthropods such as mosquitoes and ticks and that may cause encephalitis, yellow fever, or dengue fever. |