a. [ F., fr. L. impossibilis; pref. im- not + possibilis possible. See Possible. ] Not possible; incapable of being done, of existing, etc.; unattainable in the nature of things, or by means at command; insuperably difficult under the circumstances; absurd or impracticable; not feasible. [ 1913 Webster ]
With men this is impossible; but with God all things are possible. Matt. xix. 26. [ 1913 Webster ]
Without faith it is impossible to please him. Heb. xi. 6. [ 1913 Webster ]
Impossible quantity (Math.),
n. An impossibility;
“Madam, ” quoth he, “this were an impossible!” Chaucer. [ 1913 Webster ]
n. incapability of existing or occurring; impossibility.