| A2 |
abbreviation of "ampere" or "amperes," a unit of electrical current that refers to the quantity of current that passes through a resistor of one ohm when a potential of one volt is applied, equal to one coulomb per second. |
| A3 |
abbreviation of "angstrom" or "angstroms," a unit of length equal to one hundred-millionth of a centimeter, used in measuring light waves. |
| a1 |
one of the four human blood types. (See ABO system.) [1/6 definitions] |
| a2 |
any one of a group or kind. [3 definitions] |
| AB1 |
one of the four human blood groups. (See ABO system.) |
| abandon |
a state in which emotions or impulses control one completely. [1/6 definitions] |
| able |
having the skill, power, or opportunity that one must have to do a thing. [1/3 definitions] |
| abortionist |
one who performs abortions, esp. illegally. |
| abovementioned |
the one or ones previously mentioned. [1/2 definitions] |
| absentee |
of or pertaining to one who is absent. [1/2 definitions] |
| absolutist |
one who regards certain ideas as being unconditionally true. [1/3 definitions] |
| abstention |
in parliamentary procedure, a declaration that one intends not to vote on a motion. [1/2 definitions] |
| abutter |
one whose land abuts another's. |
| academician |
one who belongs to an organization, such as an academy, that promotes learning. [2 definitions] |
| accidental |
in music, a symbol that indicates that a note should be played or sung one or two semitones higher or lower than is otherwise indicated. In most cases, the pitch is to be raised or lowered by one half step, as from F natural to F sharp. [2/5 definitions] |
| accompanist |
one who provides a musical accompaniment, esp. on a piano. |
| account |
an arrangement that allows one to gain access to a computer, a computer application, or website when one enters a username and password that one has established. [1/16 definitions] |
| account executive |
in a company such as an advertising agency, a person responsible for managing one or more clients' accounts and often for securing new accounts. |
| acculturate |
to modify (one culture) by contact with another culture. [1/3 definitions] |
| accumulator |
a register or electrical circuit for storing numbers and performing one or more arithmetic or logical operations on them, as in a calculator or computer. [1/3 definitions] |
| ace |
a playing card or die face that bears only one spot. [1/7 definitions] |