mathematical

from The American Heritage® Dictionary of the English Language, 5th Edition.

• adjective Of or relating to mathematics.
• adjective Precise; exact.
• adjective Absolute; certain.
• adjective Possible according to mathematics but highly improbable.

from The Century Dictionary.

• Of, pertaining to, or relating to mathematics; having to do with pure quantity; quantitative: as, mathematical knowledge; mathematical instruments; a mathematical theory.
• According to the principles of mathematics; theoretically precise; absolutely accurate; strict; rigid; demonstrable: as, mathematical exactness; mathematical certainty.
• Geometrical, as opposed to arithmetical and algebraical: an incorrect use, formerly current.
• Astrological; magical.
• Produced by mathematics, as pure figures and number.
• Mathematics.

from the GNU version of the Collaborative International Dictionary of English.

• adjective Of or pertaining to mathematics; according to mathematics; hence, theoretically precise; accurate

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective Of, or relating to mathematics
• adjective Possible but highly improbable

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• adjective beyond question
• adjective statistically possible though highly improbable
• adjective relating to or having ability to think in or work with numbers
• adjective characterized by the exactness or precision of mathematics
• adjective of or pertaining to or of the nature of mathematics