IN MATH: 1. n. the first number, usually the x, in an ordered pair used to name a point. Ex. For any vertical line the abscissas are all the same.
IN ENGLISH: 1. as defined above.
APPLICATION: (see list 230, and 300):
1. State the abscissa for the point (3, 5.8).
2. Write the equation of a line in which the abscissa is always -4.
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