Browse Dictionary by Letter

Comprehensive
Dictionary Suite
Help
Help
Help
A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z
altar a raised structure, often a table or platform, upon or at which sacrifices or other religious ceremonies are performed.
altar boy a young male person who assists the clergy in religious services; acolyte.
altar girl a young female person who assists the clergy in religious services; acolyte.
altarpiece a work of art that decorates the area above and behind an altar.
altazimuth a telescope or other instrument that moves in altitude (up and down) and in azimuth (back and forth).
alter to make different; change. [2 definitions]
alterable capable of being changed or altered.
alterant resulting in or producing alteration. [2 definitions]
alteration the state or process of altering. [3 definitions]
alterative tending to alter or cause alteration.
altercate to argue heatedly; quarrel.
altercation a loud or angry argument or quarrel.
alter ego a second self or another aspect of oneself. [2 definitions]
alternate to continuously rotate or take turns with one another (usu. fol. by "with"). [9 definitions]
alternate angles a pair of nonadjacent angles that are formed on opposite sides of a line where it crosses two others transversely.
alternating current electrical current that reverses direction at regular intervals. (Cf. direct current.)
alternation the act or process of alternating. [2 definitions]
alternative one of two or more possibilities; option. [5 definitions]
alternative energy any form of energy other than that which comes from fossil fuel.
alternative energy source any source of energy other than fossil fuel.
alternative fuel a fuel other than fossil fuel used to power an internal combustion engine.