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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. |
a.1 |
abbreviation of "acre" or "acres," a unit of area equal to 43,560 square feet or 4,047 square meters, used in measuring land. |
absolute zero |
the lowest possible temperature for any known substance, equal to -273.15 degrees Celsius or -459.67 degrees Fahrenheit. |
acre |
a unit of area equal to 43,560 square feet, used to measure land. The acre is a standard unit of measurement in the United States and the United Kingdom. |
add up to |
equal (a certain sum) or point to (a logical conclusion) when looked at together. |
affirmative action |
a policy or program, supported by U. S. government regulations, to give equal opportunity in employment, college admissions, and the like to those considered previously disadvantaged, such as women and certain racial minority groups. |
ambidextrous |
able to use both the left and right hands with equal skill. |
amount |
to be equal to; to be the same as. [1/3 definitions] |
ampere |
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. (abbr.: A, amp) |
angstrom |
(often cap.) a unit of length equal to one hundred-millionth of a centimeter, used in measuring light waves; angstrom unit. (abbr.: A, A.U.) |
approach |
to move in the direction of or become nearly equal to in quality, degree, or amount. [1/9 definitions] |
are2 |
a unit of area equal to one hundred square meters or 119.6 square yards. |
as1 |
equally; to an equal degree. [1/6 definitions] |
as2 |
an ancient Roman unit of weight equal to approximately twelve ounces; libra. [1/2 definitions] |
as good as |
essentially equal to; practically the same as. |
associate |
linked with another or others and having equal or nearly equal status. [1/6 definitions] |
associative property |
in addition and multiplication, the characteristic that allows you to add or multiply a group of numbers in any order and get the same answer. For example, in multiplication, (5 x 2) x 7 is equal to (7 x 2) x 5. |
astronomical unit |
a unit of length based on the average distance of the earth from the sun, equal to about 149.6 million kilometers or ninety-three million miles. |
astronomical year |
a unit of time equal to the period between one vernal equinox and the next. |
atomic mass unit |
a unit equal to one twelfth of the mass of an atom of the most abundant kind of carbon, equal to 1.6605 times 1024 gram. |
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