| abstraction |
an abstract or general idea, concept, or term. [1/4 definitions] |
| abuse |
a corrupt procedure or custom. [1/7 definitions] |
| Ac |
symbol of the chemical element actinium. |
| accession |
to catalogue in order of acquiring, as in a library or museum. [1/5 definitions] |
| accommodate |
to be or become adaptable; conform. [1/6 definitions] |
| accouterment |
(often pl.) one's outfit or equipment, esp. that of a soldier, exclusive of arms and uniform. [1/2 definitions] |
| accumulator |
an apparatus in a hydraulic or pneumatic system that stores and regulates the supply of fluid that provides pressure in the system. [1/3 definitions] |
| acid |
a scornful tone; sarcasm. [1/7 definitions] |
| actinide series |
the series of chemical elements, mostly synthetic and all radioactive, that have from eighty-nine to 103 protons per atom. |
| addend |
a number added to one or more other numbers to form a sum. |
| add-on |
in computing, a supplementary program or piece of code written to alter, enhance, or extend the behavior of a main program. [1/2 definitions] |
| adenocarcinoma |
a malignant tumor formed in the glandular epithelium. |
| ad lib |
without preparation; in a spontaneous or improvised manner; ad libitum. |
| admirer |
a person who holds another person or a thing in high esteem. [1/2 definitions] |
| aeolian harp |
a musical instrument consisting of an open box with gut strings stretched across it that produce rising and falling sounds when wind passes over them. |
| aerodynamics |
(used with a sing. verb) a science that deals with the dynamics of air and other gases and with the forces acting on objects that move through them. |
| aeromechanics |
(used with a sing. verb) the science of air or gases in motion or equilibrium. |
| affirm |
to ratify or confirm. [1/2 definitions] |
| affirmable |
combined form of affirm. |
| Agana |
the capital of Guam. |
| agaric |
any of numerous related fungi with gills on the underside of a cap; mushroom. |