| a2 |
any one of a group or kind. [1/3 definitions] |
| abbé |
a title of respect for any clergyman, esp. in France. |
| ABC's |
the fundamental principles of any branch of knowledge; basics. [1/2 definitions] |
| Aberdeen Angus |
any of various hornless beef cattle originating in Scotland and having a smooth black coat. |
| ablation |
surgical removal of any part of the body. [1/2 definitions] |
| abracadabra |
any nonsense words; gibberish. [1/2 definitions] |
| absolute |
free of any external standard; not relative. [2/7 definitions] |
| absolute pitch |
the ability to sing or recognize the pitch of any tone heard; perfect pitch. [1/2 definitions] |
| absolute zero |
the lowest possible temperature for any known substance, equal to -273.15 degrees Celsius or -459.67 degrees Fahrenheit. |
| absolutist |
characterized by ideas, or a belief in ideas, whose truth is unconditional and not subject to any external standard. [1/3 definitions] |
| acacia |
any of several tropical trees of the mimosa family, some of which produce the commercially useful gum arabic. [2 definitions] |
| acanthus |
any of various Mediterranean plants with large, spiny leaves. [1/2 definitions] |
| account |
an arrangement wherein a bank or other financial institution holds a customer's deposited funds so that the funds are safe but can be accessed at any time by the customer, or the conception of this arrangement as a container for the funds that are kept. [1/16 definitions] |
| acetabulum |
any of the suction cups on the arms of an octopus, or similar appendages, as on leeches or certain fish. [1/2 definitions] |
| acetal |
any of a class of chemicals in which aldehydes are compounded with alcohol. [1/2 definitions] |
| Achilles heel |
any vulnerable or weak spot, part, or trait. |
| acid |
in chemistry, any of a group of substances that usu. dissolve in water, have a sour taste, and form salts in reaction with bases. (Cf. base.) [1/7 definitions] |
| acrobatics |
(used with a sing. verb) any display of unusual dexterity or precision. [1/3 definitions] |
| acrylic fiber |
any of a group of synthetic fibers that are made chiefly of acrylonitrile that has been formed into polymers. |
| acrylic resin |
any of a group of transparent synthetic resins that become pliable or set when heated and are used in acrylic fibers, plastics, and synthetic rubbers. |
| actin |
any of a group of contractile proteins, including proteins involved in muscle contraction, cell motility, and maintenance of cellular shape. |